☆ 4.5 Review

Synthesis and characterization of mixed valence cobalt(III)/cobalt(II) complexes with N,O-donor Schiff base ligands

POLYHEDRON (2019)

Journal

POLYHEDRON

Volume 159, Issue -, Pages 1-11

Publisher

PERGAMON-ELSEVIER SCIENCE LTD

DOI: 10.1016/j.poly.2018.10.059

Keywords

Mixed valence cobalt; Schiff base; Crystal structure; Catalytic activity; Magnetic properties

Categories

Chemistry, Inorganic & Nuclear Crystallography

Ask authors/readers for more resources

Protocol

Community support

Reagent

Community support

Abstract

The review is focused to discuss the synthetic strategy and properties of mixed valence cobalt(III)/cobalt(II) complexes with N,O-donor Schiff base ligands. Use of compartmental ligand is a good approach to prepare such complexes. Polydentate hydroxy-rich Schiff base ligands have also been used by various groups to prepare mixed valence cobalt complexes. Salen types Schiff bases have also been used by many synthetic inorganic chemists to prepare this type of complexes. The oxidation states of cobalt centers in these complexes may be assigned from BVS (Bond valence sum) calculation for each centre. Different oxidation states (i.e. +2 and +3) of two cobalt centers in the complexes could also be inferred comparing the relative bond lengths involving the two metal centers, e.g. shorter cobalt(III)-oxygen distances compared to cobalt(II)-oxygen distances. Same has also been true for cobalt-nitrogen bond lengths. Cobalt(II) is paramagnetic in nature whereas cobalt(III) is usually diamagnetic. The magnetic properties of mixed valence cobalt complexes are therefore important. Only a few complexes are showing SMM (single molecule magnet) behavior. Catalytic activities of few such complexes have also been explored and included in this review. (C) 2018 Elsevier Ltd. All rights reserved.

Authors

I am an author on this paper

Click your name to claim this paper and add it to your profile.

Reviews

Primary Rating

4.5

Not enough ratings

Secondary Ratings

Novelty

-

Significance

-

Scientific rigor

-

Rate this paper

Recommended

Article Chemistry, Inorganic & Nuclear

Exploration of noncovalent interactions in the solid state structures of carboxylate bridged trinuclear mixed valence cobalt complexes using computational tools based on the topological analysis of the electron density

Sudip Bhunia, Rosa M. Gomila, Antonio Frontera, Shouvik Chattopadhyay

Summary: Three linear mixed valence trinuclear cobalt complexes were synthesized using two N2O2 donor ligands and characterized by single crystal X-ray diffraction analysis. DFT calculations were performed to study the mixed valence nature, and the structure directing role of noncovalent interactions in the solid state was investigated.

POLYHEDRON (2022)

Add to Collection

Article Chemistry, Inorganic & Nuclear

An insight to the role of perchlorate counter ions and different non-covalent interactions in the solid state structures of mono-anionic malonic acid bridged trinuclear mixed valence cationic complexes of cobalt with tetradentate N2O2 donor ligands

Sudip Bhunia, Rosa M. Gomila, Antonio Frontera, Shouvik Chattopadhyay

Summary: Two linear mixed-valence trinuclear centrosymmetric cobalt(III)-cobalt(II)-cobalt(III) complexes have been synthesized and their solid state structures have been determined by single crystal X-ray diffraction analysis. The supra-molecular assemblies observed in the solid state structures have been analyzed using DFT calculations, focusing on CH3...pi and Cl...Cl interactions.

INORGANICA CHIMICA ACTA (2023)

Add to Collection

Article Chemistry, Inorganic & Nuclear

Field-induced single-molecule magnet behaviour in a series of dinuclear cobalt(III,II) complexes

Abhisek Banerjee, Carlos J. Gomez Garcia, Samia Benmansour, Rosa M. Gomlia, Antonio Frontera, Shouvik Chattopadhyay

Summary: We synthesized and characterized four dinuclear cobalt(III,II) complexes and investigated their structure and magnetic properties. Single crystal X-ray analysis revealed that the two cobalt centers in these complexes are located at the inner and outer positions of the reduced Schiff base ligands, respectively, with a diamagnetic low spin Co(III) ion present. Magnetic measurements confirmed that these complexes behave as monomers and exhibit field-induced slow relaxation of magnetization at low temperatures.

POLYHEDRON (2022)

Add to Collection

Article Chemistry, Inorganic & Nuclear

An insight to the spin density distribution and non-covalent interactions in a carboxylate bridged class-I mixed valence cobalt(II),cobalt(III) complex of quadruplet nature

Abhisek Banerjee, Antonio Frontera, Shouvik Chattopadhyay

Summary: A mixed valence cobalt(II), cobalt(III) complex was synthesized and its quadruplet nature was confirmed experimentally and theoretically. The spin density distribution showed slight delocalization towards oxygen and nitrogen atoms directly bonded to the cobalt center. Metal coordination enhanced the strength of π-π stacking interactions involving 4-methyl-3-nitrobenzonate co-ligands.

INORGANICA CHIMICA ACTA (2021)

Add to Collection

Article Chemistry, Inorganic & Nuclear

Estimation of the ability of the π-system of pseudohalides (azide and thiocyanate) to participate in CH...π interactions in cyclic hetero-tetranuclear cobalt(III)/sodium and linear trinuclear mixed valence cobalt(III/II/III) complexes

Tamashi Ghosh Dastidar, Kousik Ghosh, Michael G. B. Drew, Rosa M. Gomila, Antonio Frontera, Shouvik Chattopadhyay

Summary: This study focuses on the molecular structures of two cobalt complexes and verifies them using DFT calculations. Additionally, theoretical calculations were used to analyze the importance of π-π interactions involving pseudohalide ligands.

POLYHEDRON (2022)

Add to Collection

Article Chemistry, Multidisciplinary

Nontoxic Cobalt(III) Schiff Base Complexes with Broad-Spectrum Antifungal Activity

Angelo Frei, A. Paden King, Gabrielle J. Lowe, Amy K. Cain, Francesca L. Short, Hue Dinh, Alysha G. Elliott, Johannes Zuegg, Justin J. Wilson, Mark A. T. Blaskovich

Summary: Resistance to current antifungal drugs is increasing, with little attention given to the threat of drug-resistant fungal infections compared to antibacterial resistance. A series of cobalt(III) Schiff base complexes show broad-spectrum antifungal activity with no cytotoxicity to bacterial and human cells, and initial in vivo toxicity data in Galleria mellonella suggest toleration of high doses, paving the way for further studies.

CHEMISTRY-A EUROPEAN JOURNAL (2021)

Add to Collection

Article Chemistry, Inorganic & Nuclear

A tetra Co(ii/iii) complex with an open cubane Co4O4 core and square-pyramidal Co(ii) and octahedral Co(iii) centres: bifunctional electrocatalytic activity towards water splitting at neutral pH

Ankit Kumar Srivastava, Arpan Mondal, Sanjit Konar, Samudranil Pal

Summary: The reaction mechanism and product properties of 2,6-diformyl-4-methylphenol, 4-methoxybenzoylhydrazine, and cobalt acetate tetrahydrate in methanol were investigated. The molecular formula and crystal structure of the product were confirmed, and its electrochemical properties and catalytic activity were explored.

DALTON TRANSACTIONS (2022)

Add to Collection

Article Chemistry, Physical

Synthesis, characterization, crystal structure and antibacterial activity studies of cobalt(II) and zinc(II) complexes containing halogen quinoline Schiffbase ligand

Juan Shi, Hongguang Ge, Fengmin Song, Shaobo Guo

Summary: This study presents the synthesis, characterization, and biological activity of Co(II) and Zn(II) complexes derived from 4-chloro-2-((quinolin-6-ylimino)methyl)phenol (HL). The complexes exhibited significant antimicrobial activity, with 2 showing a wider range of antimicrobial activity compared to HL and 1.

JOURNAL OF MOLECULAR STRUCTURE (2022)

Add to Collection

Article Chemistry, Physical

A series of acac-ruthenium complexes with chiral Schiff base ligands: Synthesis, characterization and catalytic property

Yan-Ping Jiao, Li-Song Zhang, Chong Chen, Li-Hua Tang, Yao Cheng, Ai-Quan Jia, Qian-Feng Zhang

Summary: Four acac ruthenium precursors and their derivatives with chiral Schiff bases have been synthesized and characterized. The structures of these compounds have been determined by single-crystal X-ray diffraction. The catalytic property of these compounds for the cyclopropanation of styrene has been presented.

JOURNAL OF MOLECULAR STRUCTURE (2023)

Add to Collection

Article Chemistry, Physical

Metal-Dependent Antiferromagnetic Interactions in Ba2MCl6 (M2+ = Co, Fe, Mn)

Kurt P. P. Lindquist, Xianghan Xu, Robert J. J. Cava

Summary: Exploring metal-halide structures allows for studying structure-property relationships in magnetic solids. This study investigates the magnetism of Ba2CoCl6, as well as the previously unreported analogues Ba2FeCl6, Ba2MnCl6, and Ba2MgCl6. The magnetic ordering temperatures in Ba2CoCl6, Ba2FeCl6, and Ba2MnCl6 vary based on ionic radius and electronic configuration of the transition metal.

CHEMISTRY OF MATERIALS (2023)

Add to Collection

Article Chemistry, Inorganic & Nuclear

Structural analysis of five-coordinate aluminium(salen) complexes and its relationship to their catalytic activity

Heather Fish, Sam Hart, Katie J. Lamb, Michael North, Sophie C. Z. Quek, Adrian C. Whitwood, Barnaby Woods, Xiao Wu

Summary: Protonated [Al(Bu-t-salen)](2)O complexes exhibit dynamic structures and play a crucial role in catalyzing the synthesis of cyclic carbonates and assisting in the reaction between epoxides and carbon dioxide.

DALTON TRANSACTIONS (2021)

Add to Collection

Article Chemistry, Physical

Structural Characterization, DFT, Hirshfeld Surface Analysis and Antibacterial Activity of a Schiff Base Derived from Cyclohexanediamine

Nur Husnina Nasaruddin, Shahrul Nizam Ahmad, Siti Syaida Sirat, Tan Kong Wai, Nurul Aili Zakaria, Hadariah Bahron

Summary: A new Schiff base compound AD2Me was synthesized and characterized using various techniques including single crystal X-ray diffraction, NMR spectroscopy. The crystal structure and molecular properties of AD2Me were verified by density functional theory calculations. The antibacterial activity testing indicated that the compound showed no significant activity against two bacterial strains.

JOURNAL OF MOLECULAR STRUCTURE (2021)

Add to Collection

Article Chemistry, Physical

Two three-dimensional mixed-ligated cobalt phosphonate coordination polymers: Syntheses, crystal structures and magnetic properties

Dai Zeng, Min Ren, Song -Song Bao, Tao Zheng

Summary: Two new mixed-ligated cobalt phosphonates, incorporating different coligands, form different three-dimensional framework structures with distinct magnetic properties. Compound 1 shows antiferromagnetic interactions dominance, while compound 2 exhibits weak ferromagnetic exchange couplings.

JOURNAL OF MOLECULAR STRUCTURE (2022)

Add to Collection

Article Chemistry, Inorganic & Nuclear

Ligand mediated structural diversity of copper(II)-azido moiety: Synthesis, structure and magnetic study

Mrinmoy Ghosh, Partha Pratim Chakrabarty, Atish Dipankar Jana, Dieter Schollmeyer, Hiroshi Sakiyama, Masahiro Mikuriya, Rakesh Debnath, Paula Brandao, Dasarath Mal, Sandip Saha

Summary: Two copper azido complexes with different azido bridged chain structures and magnetic properties have been synthesized and characterized in this study.

INORGANICA CHIMICA ACTA (2022)

Add to Collection

Article Chemistry, Inorganic & Nuclear

SYNTHESIS, CRYSTAL STRUCTURE AND ANTIMICROBIAL ACTIVITY OF COBALT(III) COMPLEXES WITH SCHIFF BASE LIGANDS

Y-X Feng, S-Z Bai, L-W Xue

Summary: This article describes the synthesis and characterization of three new mononuclear cobalt(III) complexes, which exhibit effective antimicrobial activity. The complexes represent a new class of biologically active compounds.

JOURNAL OF STRUCTURAL CHEMISTRY (2022)

Add to Collection

Article Chemistry, Multidisciplinary

Large interaction energy for the homodimer and the heterodimer extracted from the supramolecular chain of a bent trinuclear zinc(ii) complex with a reduced Schiff base ligand

Mainak Karmakar, Rosa M. Gomila, Antonio Frontera, Shouvik Chattopadhyay

Summary: The bent trinuclear zinc complex forms 1D supramolecular assemblies in the solid state, influenced by strong H-bond donor and acceptor groups. Dimerization energies of homodimers and heterodimers extracted from the 1D chain are large, characterized using computational tools. Analysis of the Cambridge Structural Database clarifies interactions observed in the assemblies.

NEW JOURNAL OF CHEMISTRY (2022)

Add to Collection

Review Chemistry, Inorganic & Nuclear

Synthetic strategies, structures and properties of di and polynuclear cobalt complexes with H2salen type Schiff bases and their reduced analogues

Tamashi Ghosh Dastidar, Shouvik Chattopadhyay

Summary: This review provides an overview on the synthetic strategies, structures, magnetic properties, and biological activities of polynuclear cobalt complexes with H2salen type Schiff bases and their reduced analogues. The complexes are classified into Cobalt(II), cobalt(III), and mixed valence cobalt(III)/cobalt(II) complexes, each synthesized using different methods. The less explored areas of potential applications of these complexes are also discussed.

POLYHEDRON (2022)

Add to Collection

Review Chemistry, Inorganic & Nuclear

Use of hexacyanometalates as efficient linkers to assemble manganese (III)-salen moieties forming cyanide bridged polynuclear complexes: A review

Kanchan Shaikh, Ayan Santra, Shouvik Chattopadhyay

Summary: This review provides a comprehensive overview of the synthesis, X-ray structures, and magnetic properties of cyanide bridged polynuclear complexes containing Mn(III)-salen building blocks.

POLYHEDRON (2022)

Add to Collection

Article Chemistry, Inorganic & Nuclear

Synthesis, characterization and self assembly of dinuclear zinc Schiff base complexes: A combined experimental and theoretical study

Tanmoy Basak, Sourav Roy, Snehasis Banerjee, Rosa M. Gomila, Antonio Frontera, Shouvik Chattopadhyay

Summary: Two new dinuclear zinc(II) complexes using different Schiff base ligands have been synthesized and characterized. The non-covalent interactions observed in the solid-state structures of both complexes have been analyzed using computational tools and surface analysis. The differences in crystal packing and non-covalent interactions have also been studied.

POLYHEDRON (2022)

Add to Collection

Article Chemistry, Multidisciplinary

An insight into the non-covalent interactions in the solid state structures of dinuclear cobalt(ii) complexes with N,O-donor ligands: application of the complexes in the fabrication of Schottky devices

Rabi Sankar Sarkar, Animesh Biswas, Partha Pratim Ray, Rosa M. Gomila, Michael G. B. Drew, Snehasis Banerjee, Antonio Frontera, Shouvik Chattopadhyay

Summary: Two new dinuclear cobalt(ii) complexes were synthesized using multidentate N,O-donor ligands with two pockets. The complexes were characterized by single crystal X-ray diffraction and spectral analysis. The noncovalent interactions were analyzed using density functional theory (DFT) calculations. The optical properties of the complexes, focusing on the band gaps, were also studied. Both complexes were used for the fabrication of semiconducting Schottky devices.

CRYSTENGCOMM (2023)

Add to Collection

Review Chemistry, Inorganic & Nuclear

An overview of the synthesis, structures and magnetic properties of end-on pseudo-halide bridged dinuclear nickel(II) complexes with N,O-donor salicylaldimine Schiff base blocking ligands

Puspendu Middya, Deep Chowdhury, Shouvik Chattopadhyay

Summary: In this review, various synthetic routes of pseudo-halide bridged dinuclear nickel(II) complexes with ethylene diamine-based salicylaldimine Schiff base blocking ligands having N,O-donor sites were gathered, and their structures and magnetic properties were discussed in detail. The correlation between magnetic exchange coupling among nickel(II) centers and bridging mode as well as bonding parameters such as Ni-N and Ni...Ni distances, Ni-N-Ni angles, etc., was also highlighted.

INORGANICA CHIMICA ACTA (2023)

Add to Collection

Review Chemistry, Inorganic & Nuclear

An overview of copper complexes with diamine-based N4 donor bis-pyridine Schiff base ligands: Synthesis, structures, magnetic properties and applications

Shashwata Pramanik, Shouvik Chattopadhyay

Summary: Different synthetic routes and structures of copper complexes with diamine-based N4 donor bis-pyridine Schiff base ligands are reviewed, and their structures and magnetic properties are discussed in detail. Copper shows either octahedral or square pyramidal geometry in the mononuclear complexes. The review also includes the applications of these complexes.

INORGANICA CHIMICA ACTA (2023)

Add to Collection

Review Chemistry, Inorganic & Nuclear

An overview of the synthesis, structures and applications of di and polynuclear zinc-salen complexes with Zn2O2 cores

Puspendu Middya, Dishari Medda, Shouvik Chattopadhyay

Summary: A variety of zinc complexes with H2salen type Schiff bases have been synthesized and their structures and properties have been reported in literature. This review provides an overview on the synthetic strategies, structures, and important applications of phenolate bridged di and polynuclear zinc complexes with these salen type ligands. The structures of the complexes were retrieved from the Cambridge Crystallographic Database (CSD). Important properties and less explored potential applications of these complexes are also discussed briefly in this review.

INORGANICA CHIMICA ACTA (2023)

Add to Collection

Article Chemistry, Inorganic & Nuclear

An overview on the synthesis, structure and properties of nickel(II) and zinc (II) complexes with diamine-based N4 donor bis-pyridine and N6 donor tris-pyridine Schiff base ligands

Puspendu Middya, Pratim Chakraborty, Shouvik Chattopadhyay

Summary: This article gathers different synthetic routes and structures of several nickel(II) and zinc(II) complexes with diamine-based N4 and N6 donor bis-pyridine and tris-pyridine Schiff base ligands. Their structures and magnetic properties are discussed in detail. The review also includes the applications of these complexes, focusing on those with available X-ray structures.

INORGANICA CHIMICA ACTA (2023)

Add to Collection

Article Chemistry, Inorganic & Nuclear

Insight into the role of pseudo-halides as multiple hydrogen bond acceptors in the formation of supramolecular 1D assembly of di and trinuclear zinc complexes

Puspendu Middya, Mainak Karmakar, Antonio Frontera, Shouvik Chattopadhyay

Summary: In this research, the synthesis of two new zinc(II) complexes was reported and characterized through elemental and spectral analyses. The structures were confirmed using single crystal X-ray diffraction analysis. The complexes formed 1D supramolecular assemblies with pseudohalides acting as multiple H-bond acceptors. Theoretical analysis and DFT calculations were conducted, and the importance of long-range van der Waals interactions was emphasized. This manuscript is expected to attract the attention of synthetic inorganic chemists, as well as theoreticians and chemists working in crystal engineering and supramolecular chemistry.

INORGANICA CHIMICA ACTA (2023)

Add to Collection

Article Chemistry, Multidisciplinary

Fabrication of Schottky barrier diodes utilizing carboxylate bridged trinuclear mixed valence cobalt(iii/ii/iii) complexes of tetradentate N2O2 donor reduced Schiff base ligands

Sudip Bhunia, Pubali Das, Snehasis Banerjee, Rosa M. Gomila, Michael G. B. Drew, Antonio Frontera, Partha Pratim Ray, Shouvik Chattopadhyay

Summary: Three mixed-valence trinuclear cobalt(III)-cobalt(II)-cobalt(III) complexes were synthesized using two tetradentate N2O2 donor 'reduced Schiff base' ligands and acetate or benzoate as anionic co-ligands. The solid state structures of these complexes were characterized and their electrical conductivity was studied. These complexes were also used to fabricate Schottky barrier diodes.

NEW JOURNAL OF CHEMISTRY (2023)

Add to Collection

Article Chemistry, Multidisciplinary

An insight into the hydrogen bonding, halogen bonding and chalcogen bonding interactions in manganese(iii) complexes with N2O2donor salicylidine Schiff base ligands

Mridul Karmakar, Wahedur Sk, Rosa. M. M. Gomila, Michael. G. B. Drew, Antonio Frontera, Shouvik Chattopadhyay

Summary: Four manganese(III) complexes have been synthesized and characterized. All complexes are monomeric and show a six-coordinated pseudo-octahedral geometry. The coordinated water molecules in the complexes participate in hydrogen-bonded networks. DFT calculations were performed to analyze the halogen and chalcogen bonding interactions in the complexes.

RSC ADVANCES (2023)

Add to Collection

Article Chemistry, Multidisciplinary

Slow relaxation of the magnetization in two cobalt(III)/cobalt(II) dimers†

Rabi Sankar Sarkar, Carlos J. Gomez-Garcia, Michael G. B. Drew, Shouvik Chattopadhyay

Summary: Here we report the synthesis and characterization of two new mixed-valence Co-II/Co-III dimers with similar structural topology, showing field-induced slow relaxation of magnetization.

NEW JOURNAL OF CHEMISTRY (2023)

Add to Collection

Review Chemistry, Inorganic & Nuclear

An overview on the synthesis, structure and application of mercury complexes with hydrazine based bis-pyridine Schiff base ligands

Puspendu Middya, Snigdhya Ghosh Mondal, Pallab Bhowmik, Susovan Bera, Shouvik Chattopadhyay

Summary: This review provides an overview of the synthetic strategies and structures of mercury complexes with hydrazine based bis-pyridine Schiff base ligands. The important applications of these complexes are highlighted, as well as the less explored areas of potential applications.

INORGANICA CHIMICA ACTA (2023)

Add to Collection

Article Chemistry, Inorganic & Nuclear

Insight into charge transportation in cadmium based semiconducting organic-inorganic hybrid materials and their application in the fabrication o photosensitive Schottky devices

Sourav Roy, Arka Dey, Rosa M. Gomila, Joaquin Ortega-Castro, Antonio Frontera, Partha Pratim Ray, Shouvik Chattopadhyay

Summary: A coordination polymer and a trinuclear complex have been synthesized using a specific donor Schiff base ligand. Both complexes exhibit suitable conductivity and photosensitivity, and can be used to fabricate Schottky diode devices for efficient charge transportation under both dark and irradiation conditions.

DALTON TRANSACTIONS (2022)

Add to Collection

Article Chemistry, Inorganic & Nuclear

Towards an efficient oxidation of sulfides to sulfoxides over magnetic and grafted polyoxometalate on graphene oxide nanosheets

Masoume Malmir, Majid M. Heravi, Zahra Yekke-Ghasemi, Masoud Mirzaei

Summary: In this study, a tri-component composite consisting of Fe3O4 nanoparticles, Keggin-type polyoxometalate, and graphene oxide was prepared and investigated as a catalyst for the oxidation of sulfides to sulfoxides. The catalyst showed excellent stability, high yields, and recyclability, making it a promising choice for organic-inorganic hybrid catalytic reactions conducted under mild conditions.

POLYHEDRON (2024)

Add to Collection

Article Chemistry, Inorganic & Nuclear

The synthesis and characterization of a bidentate complex of 1,1′-(1,3-phenylene)bis(3-butylimidazolium) pincer proligand with molybdenum - A non-pincer binding mode

Samuel D. Juarez-Escamilla, Sriloy Dey, Bruno Donnadieu, T. Keith Hollis

Summary: In this study, a bidentate Mo complex was synthesized using metalation and transmetalation methodology. The synthesis was optimized to achieve a high yield. The crystal structure of the bidentate complex was determined. Additionally, alternative forms of ligands were discovered in the reaction.

POLYHEDRON (2024)

Add to Collection

Article Chemistry, Inorganic & Nuclear

Transition metal complexes of N'-(2-cyanoacetyl)nicotinohydrazide: Synthesis, structural and anticancer activity studies

Mohamed H. Abdel-Rhman, Ghada Samir, Mostafa A. Hussien, Nasser M. Hosny

Summary: This study investigated the dissolution performance of hydrazine carbonate solution on zirconium dibutyl phosphate (Zr-DBP), and found that hydrazine carbonate solution could promote the dissolution of Zr-DBP. The effects of dissolution temperature and hydrogen peroxide concentration on the dissolution efficiency were also explored, and the corrosion effect on stainless steel by hydrazine carbonate solution was studied.

POLYHEDRON (2024)

Add to Collection

Article Chemistry, Inorganic & Nuclear

Preparation of vermiculite/g-C3N4/TiO2 composites and their degradation of dye wastewater

Qiaofang Fu, Fangyu Tan, Wu Ying

Summary: This study successfully prepared vermiculite/g-C3N4/TiO2 composites and found that under specific conditions, the composites exhibited excellent degradation effects, with a high degradation rate for methylene blue. Additionally, the composites were able to enhance surface area, reduce carrier loading rate, improve light energy utilization, and enhance durability.

POLYHEDRON (2024)

Add to Collection

Article Chemistry, Inorganic & Nuclear

Functionalised polymeric materials in the efficient synthesis of 2-substituted 13-butadienyl molybdenum complexes

Annabelle G. W. Hodson, Robert T. Mason

Summary: Functionalised polystyrene resins have been found to be efficient catalysts in the synthesis of specific complexes, with the conversion rate controlled by the polymer structure. The addition of amines or amino acids can further yield substituted 13-butadienyl complexes, which have been analyzed by NMR.

POLYHEDRON (2024)

Add to Collection

Article Chemistry, Inorganic & Nuclear

Dual role of water in the oxygenation of phenylmercaptoacetic acids catalyzed by [oxo(salen)chromium(V)]+ PF6-

C. Kavitha, S. Anbarasan, P. Subramaniam

Summary: The sulfoxidation of PMAAs by the oxo(salen)chromium(V) complex in aqueous acetonitrile medium was studied. The rate of the reaction is influenced by the polarity of the medium and the substituents on PMAA, with electron donating substituents accelerating the reaction and electron withdrawing substituents retarding the reaction.

POLYHEDRON (2024)

Add to Collection

Article Chemistry, Inorganic & Nuclear

Three new Zn (II)-based coordination polymers: Optical properties and dye degradation against RhB

Qiang-Qiang Liu, Mithun Kumar Ghosh, Shu-Lan Cai, Xiao-Hong Liu, Lu Lu, Mohd. Muddassir, Tanmay Kumar Ghorai, Jun Wang

Summary: Three newly developed coordination polymers (CPs) with semiconducting properties were synthesized using hydrothermal methods. These CPs exhibit superior photocatalytic activity and can degrade organic pollutants effectively.

POLYHEDRON (2024)

Add to Collection

Article Chemistry, Inorganic & Nuclear

Catalytic deoxydehydration of glycerol to allyl alcohol in the presence of mono-oxygenated rhenium diphosphine complexes

Mehrnaz Aliahmadi, Ali Nemati Kharat, Jan Janczak

Summary: This study proposes a method for synthesizing allyl alcohol using cost-effective and renewable bio-resource glycerol. By utilizing catalysts, alcohol as a solvent, and a reducing agent, allyl alcohol with an efficiency of 100% was obtained. The structures of the newly synthesized complexes were determined using X-ray single crystallography.

POLYHEDRON (2024)

Add to Collection

Article Chemistry, Inorganic & Nuclear

Synthesis, crystal structures, CT-DNA/BSA binding modes and antibacterial activities of Zn(II) and Cr(III) with an acylhydrazone ligand

Ji-Yan Gao, Nan Zhang, Dong-Sheng Huang, Xiang-Rong Liu, Zai-Wen Yang, Shun-Sheng Zhao

Summary: Two new transition metal complexes I and II were synthesized and characterized. The complexes exhibited strong thermal stabilities and showed effective binding to CT-DNA and BSA. Complex II exhibited stronger inhibition activity against P. aeruginosa than gentamicin sulfate. These complexes have potential applications in drug research.

POLYHEDRON (2024)

Add to Collection

Article Chemistry, Inorganic & Nuclear

Efforts to understand the degree of carboxylate substitution in cis-[Pt(S(O) Me2)(guanidine)Cl2]: Synthetic, Structural and DFT Studies

Rishabh Ujjval, Hilal Ahmad Khan, Chinnappan Sivasankar, Natesan Thirupathi

Summary: In this study, a rigid 2-aminobenzimidazole type guanidine and its platinum complexes were synthesized through a series of reactions and characterized by various physical and chemical methods. The reaction mechanism was also explained through DFT calculations.

POLYHEDRON (2024)

Add to Collection

Article Chemistry, Inorganic & Nuclear

A new optical nickel(II) cyclen-naphthalene probe for molecular thermometry using fluorescence and NMR techniques

Marcelo Carpes Nunes, Thais Zaboenco, Vinicius Kemper Melara, Gabriel Barros Baptistella, Andre Luiz Barboza Formiga, Andersson Barison, Fabio Souza Nunes

Summary: A new luminescent molecular thermometer has been developed, which uses the spin-crossover equilibrium of a nickelcyclen derivative to measure temperature. The sensor shows high sensitivity and accuracy.

POLYHEDRON (2024)

Add to Collection

Article Chemistry, Inorganic & Nuclear

Sensitized Eu(III) luminescence by energy transfer from the Cu(I) antenna chromophore

Yuyu Shan, Zhenqin Zhao, Xia Zhang, Zhan Wu, Xiu-Ling Li

Summary: In this study, a new bridging ligand was synthesized through refluxing, and two mononuclear Cu(I) complexes and two trinuclear Cu(I)-Eu(III) complexes were obtained through self-assembly. The Cu(I) antenna chromophores successfully transferred energy to the Eu(III) centers, achieving sensitized Eu(III) luminescence.

POLYHEDRON (2024)

Add to Collection

Article Chemistry, Inorganic & Nuclear

Reactivity of ruthenium complexes towards organogallium reagents: Gallium as a Z-type ligand or as a gallate counterion

Gabriela Sanchez-Lecuona, Mayra C. Vazquez-Nunez, Bruno Donnadieu, Miguel A. Munoz-Hernandez, Virginia Montiel-Palma

Summary: The reaction of RuHCl(PPh3)3 with GaMe3 has been studied and the obtained complexes were analyzed in detail. The results indicate the formation of a Ru-Ga bond, suggesting the generation of an in situ formed ambiphilic phosphinogallyl ligand. This is of significance for understanding the interaction between metal-halogen bonds and metal-small molecule bonds.

POLYHEDRON (2024)

Add to Collection

Article Chemistry, Inorganic & Nuclear

Electrical, spectroscopic and DFT studies of synthesized bridged bis (2-oxy benzylidene) hydrazine-carbonothioly-hydrazono cobalt(II)phthalocyanine

Sevil Sener, Nursel Acar, Fatih Dumludag

Summary: The synthesis, characterization, spectroscopic and bonding features of a new Co (II) phthalocyanine compound containing two thiocarbohydrazone groups were explained. The compound showed semiconductor properties and potential as a temperature sensor.

POLYHEDRON (2024)

Add to Collection

Article Chemistry, Inorganic & Nuclear

Dansyl derivative turn off fluorescent probe for Al3+: Experimental and computational study in aqueous medium

Ledja B. O. Davi, Aryanna S. P. N. Costa, Mariana S. Silva, Adriana S. Ribeiro, Cintya D. A. E. S. Barbosa, Julio C. S. Da Silva, Dimas J. P. Lima, Daniela S. Anunciacao

Summary: In this study, a dansyl derivative sensor called o-PDDS was prepared and used for the detection of Al3+ ions in water. The o-PDDS sensor exhibited high sensitivity and linear response towards Al3+ ions. Experimental and computational studies confirmed a 1:1 stoichiometry ratio between o-PDDS and Al3+ ions. Real sample analysis demonstrated the selectivity and detection performance of the sensor, indicating its potential for field use.

POLYHEDRON (2024)

Add to Collection

© Peeref 2019-2024. All rights reserved.