Article
Materials Science, Multidisciplinary
H. Y. Hah, S. Gray, C. E. Johnson, J. A. Johnson, V Kolesnichenko, P. Kucheryavy, G. Goloverda
Summary: Mono-disperse iron oxide nanoparticles synthesized by high-temperature hydrolysis were studied using Mo center dot ssbauer spectroscopy, revealing a critical diameter of around 11 nm for room temperature superparamagnetism. Particles larger than 11.9 nm exhibited ferrimagnetic properties, while particles smaller than 10.6 nm showed superparamagnetism.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2021)
Article
Chemistry, Physical
Yu Knyazev, D. A. Balaev, S. Stolyar, A. A. Krasikov, O. A. Bayukov, M. N. Volochaev, R. N. Yaroslavtsev, V. P. Ladygina, D. A. Velikanov, R. S. Iskhakov
Summary: Samples of synthetic ferrihydrite with an average nanoparticle size of 2.7 nm were studied using magnetometry and Mossbauer spectroscopy, revealing the impact of magnetic interactions between ferrihydrite nanoparticles on the magnetic properties of the material and the temperature evolution of Mossbauer spectra. Comparison between results obtained on synthetic ferrihydrite and data for biogenic ferrihydrite samples with a polysaccharide shell surrounding particles showed that the shell weakens interparticle magnetic interactions.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Physical
Dogan Kaya, Idris Adanur, Mustafa Akyol, Faruk Karadag, Ahmet Ekicibil
Summary: CoPt nanoparticles were synthesized by the reduction of Pt(acac)2 and Co(acac)2 simultaneously under N-2 atmosphere with the polyol method. The structural and magnetic properties of CoPt nanoparticles are affected by the increased Pt concentration and size effects. The magnetic results showed that coercivity and exchange bias decreased with increasing temperature and Pt concentration as the nanoparticles transitioned from ferromagnetic to superparamagnetic phase.
JOURNAL OF MOLECULAR STRUCTURE
(2021)
Article
Physics, Applied
Joao Carlos Rocha de Araujo, Carlos Augusto de Moraes Iglesias, Rodolfo Bezerra da Silva, Suzana Araujo Barbosa, Jayson Xavier, Ernani Dias da Silva Filho, Jose Luis Cardozo Fonseca, Paloma Boeck Souza, Cristiani Campos Pla Cid, Fernando Luis de Araujo Machado, Edimilson Felix da Silva, Matheus Gamino, Suzana Nobrega de Medeiros, Marcio Assolin Correa, Felipe Bohn
Summary: In this study, we systematically investigated the properties of superparamagnetic MgFe2O4 nanoparticles and found that their magnetic response is not well described by the Langevin function. We speculated that this deviation is due to the existence of exchange interactions in the system. By conducting equilibrium and dynamic magnetization measurements and employing a mean-field approximation, we obtained a positive value for the parameter Theta associated with the mean field, indicating the presence of exchange forces between nanoparticles.
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2022)
Review
Oncology
Raghuraj Singh Chouhan, Milena Horvat, Jahangeer Ahmed, Norah Alhokbany, Saad M. Alshehri, Sonu Gandhi
Summary: This review discusses the selective targeting of magnetic nanoparticles for various solid tumors through surface modification, highlighting the remarkable properties of iron oxide nanoparticles for biomedical applications. The synthesis, surface modification, and diverse applications of iron oxide nanoparticles for diagnosis, imaging, therapy, enzyme mimetic compounds, and contrasting agents are also emphasized.
Article
Environmental Sciences
Raja Selvaraj, Shraddha Pai, Ramesh Vinayagam, Thivaharan Varadavenkatesan, Ponnusamy Senthil Kumar, Pham Anh Duc, Gayathri Rangasamy
Summary: This review paper summarizes the synthesis methods of iron and iron oxide nanoparticles, with a focus on green synthesis. The magnetic properties of these nanomaterials and their applications for pollutant removal are discussed. The challenges and future aspects of these nanomaterials for environmental applications are also explored.
Article
Chemistry, Physical
Yu Knyazev, D. A. Balaev, S. Stolyar, O. A. Bayukov, R. N. Yaroslavtsev, V. P. Ladygina, D. A. Velikanov, R. S. Iskhakov
Summary: This study investigates the biogenic ferrihydrite nanoparticles and reveals the exceptional magnetic anisotropy formed by the highly developed surface of ferrihydrite nanoparticles. A core-shell structural model of the biogenic ferrihydrite particles is proposed based on Mossbauer data analysis.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Physics, Applied
D. A. Balaev, I. S. Poperechny, A. A. Krasikov, S. Semenov, S. Popkov, Y. Knyazev, V. L. Kirillov, S. S. Yakushkin, O. N. Martyanov, Yu L. Raikher
Summary: The study on the magnetodynamics of cobalt ferrite nanoparticles revealed the influence of the superparamagnetic effect, with the increase in magnetic field variation rate leading to an increase in coercivity and a decrease with temperature. The proposed theoretical model explained the observed phenomena well.
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2021)
Article
Materials Science, Multidisciplinary
D. A. Balaev, S. Stolyar, Yu Knyazev, R. N. Yaroslavtsev, A. Pankrats, A. M. Vorotynov, A. A. Krasikov, D. A. Velikanov, O. A. Bayukov, V. P. Ladygina, R. S. Iskhakov
Summary: This study aims to investigate the effects of interparticle magnetic interactions and individual characteristics of ferrihydrite nanoparticles on ferromagnetic resonance (FMR) spectra. The FMR spectra show a gap in the field-frequency dependence at low temperatures, which is attributed to the individual characteristics of ferrihydrite nanoparticles. Interparticle magnetic interactions dramatically affect the behavior of FMR spectra parameters and change nonmonotonically with temperature variation.
RESULTS IN PHYSICS
(2022)
Article
Chemistry, Multidisciplinary
Andrea Atrei, Fariba Fahmideh Mahdizadeh, Maria Camilla Baratto, Andrea Scala
Summary: The size, size distribution, and magnetic properties of magnetite nanoparticles prepared under different citrate conditions were investigated by XRD, DLS, EPR, and magnetization measurements. Citrate was found to affect the size and magnetic properties of the nanoparticles, with citrate-coated nanoparticles showing greater stability.
APPLIED SCIENCES-BASEL
(2021)
Article
Chemistry, Analytical
Xiaofeng Wang, Yun Cao, Jin Zhang, Shun Zhou, Naihong Ding, Yaping Zhang, Peng Wang, Dongfeng Guo, Xiaoyu Zhang, Feng Zheng, Mingjing Guan, Yanyan Li, Jingjing Li, Huijuan Tian
Summary: The physicochemical properties of tobacco ash under different combustion pyrolysis simulation conditions and in different areas of lit cigarettes rolling from various cut tobacco fillers were investigated. The study found differences in color, combustion rate, and microstructure among ash produced from different types of tobacco.
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
(2022)
Article
Materials Science, Multidisciplinary
Yaseen Ahmad, Bindu Raina, Sonali Thakur, K. K. Bamzai
Summary: Magnesium and yttrium doped manganese ferrite nanoparticles were prepared and investigated for their structural, morphological, optical, magnetic, and dielectric properties. Various parameters, such as crystallite size, optical band gap, and saturation magnetization, were determined.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2022)
Article
Physics, Condensed Matter
Chandni Rani, Surendra Deo Tiwari
Summary: In this study, synthetic two-line ferrihydrite particles were characterized using various instruments. The average particle size was found to be 2 nm. The temperature variation of the magnetic susceptibility showed a bifurcation at 50 K, and below this temperature, the susceptibility became temperature independent. The magnetization data at 300 K was analyzed considering the particle size distribution.
PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS
(2022)
Article
Materials Science, Multidisciplinary
Airat G. Kiiamov, Anna G. Ivanova, Alexander N. Solodov, Mikhail A. Cherosov, Dmitrii A. Tayurskii, Artur Khannanov
Summary: The study investigates the structure and properties of organically coated iron oxide nanoparticles, which can be used to prepare magnetic nanoparticles with different magnetic properties and sizes, especially for biomedical applications.
Article
Materials Science, Multidisciplinary
E. K. Frolova, I. S. Petrik, O. F. Kolomys, O. G. Sarbey, N. P. Smirnova, O. Oranska
Summary: Studies of magnetization of undoped and Mn-doped nanosized titanium dioxide powders showed that its dependence on the magnetic field can be approximated by a linear combination of two Langevin functions. The magnetization is influenced by two types of paramagnetic centers, including Ti+3 ions + O- vacancies and manganese ions in the doped powders. The introduction of Mn into the TiO2 lattice mainly leads to the predominance of the paramagnetic contribution and a small increase in the number of ferromagnetic clusters.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Luca Muenzfeld, Milena Dahlen, Adrian Hauser, Nolwenn Mahieu, Senthil Kumar Kuppusamy, Jules Moutet, Maxime Tricoire, Ralf Koeppe, Leo La Droitte, Olivier Cador, Boris Le Guennic, Gregory Nocton, Eufemio Moreno-Pineda, Mario Ruben, Peter W. Roesky
Summary: The solvation of [(CNT)Ln(eta(8)-COT)] complexes with tetrahydrofuran (THF) can lead to neutral and ionic species in a solid-to-solid transformation. These species exhibit switchable luminophores and single-molecule magnet properties due to the distortion caused by solvation. The desolvation of the coordinated solvents can be achieved through a dynamic vacuum or temperature gradient stimulus. Raman spectroscopic investigations confirm the fast and reversible solvation and desolvation processes, and a Nd:YAG laser is found to induce a spatially resolved self-sufficient switching process for the Ce(III) analogue.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Multidisciplinary
Kais Dhbaibi, Maxime Grasser, Haiet Douib, Vincent Dorcet, Olivier Cador, Nicolas Vanthuyne, Francois Riobe, Olivier Maury, Stephan Guy, Amina Bensalah-Ledoux, Bruno Baguenard, Geert L. J. A. Rikken, Cyrille Train, Boris Le Guennic, Matteo Atzori, Fabrice Pointillart, Jeanne Crassous
Summary: The combination of physical properties sensitive to molecular chirality in a single system allows the observation of interesting phenomena such as magneto-chiral dichroism (MChD) and circularly polarized luminescence (CPL), which have potential applications in optical data readout and display technology. By coordinating a chiral organic chromophore to Yb(hfac)(3) units, homochiral one-dimensional coordination polymers of Yb-III were designed, which exhibit strong magnetic anisotropy and show single-molecule magnet behavior and room temperature magneto-chiral dichroism (MChD). Computational investigations support the correlation between MChD and the structure.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Multidisciplinary
Moritz Bernhardt, Maciej D. D. Korzynski, Zachariah J. J. Berkson, Fabrice Pointillart, Boris Le Guennic, Olivier Cador, Christophe Coperet
Summary: Generating or retaining slow magnetic relaxation in surface-immobilized single-molecule magnets (SMMs) from molecular precursors is a challenging task. However, a material with SMM characteristics has been successfully generated by chemisorption of (Cp-ttt)(2)DyCl on a silica surface containing tailored Lewis acidic Al-(III) sites. Detailed studies reveal slow magnetic relaxation up to 51 K, hysteresis up to 8 K, and an effective energy barrier (U (eff)) of 449 cm(-1), the highest reported for a supported SMM.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Materials Science, Multidisciplinary
Emir Poskovic, Fausto Franchini, Marta Ceroni, Claudia Innocenti, Luca Ferraris, Claudio Sangregorio, Andrea Caneschi, Marco Actis Grande
Summary: Nowadays, the circular economy is gaining attention in sectors where raw material supply is critical. Recycling of rare earth elements, particularly NdFeB magnets, is important due to cost and environmental concerns. A new mechanical method for recycling without hydrogen, high temperature, or chemical processes has been proposed and compared with a traditional method. Analysis of the obtained NdFeB powders includes magnetic properties and chemical composition, specifically oxygen content.
Article
Chemistry, Multidisciplinary
Francesca Brero, Paolo Arosio, Martin Albino, Davide Cicolari, Margherita Porru, Martina Basini, Manuel Mariani, Claudia Innocenti, Claudio Sangregorio, Francesco Orsini, Alessandro Lascialfari
Summary: We investigated the effect of different organic coatings on the H-1-NMR relaxation properties of ultra-small iron-oxide-based magnetic nanoparticles. Magnetization measurements revealed similar behavior as a function of temperature and field for nanoparticles with different coatings but the same core diameter. However, the H-1-NMR longitudinal relaxivity showed different intensity and frequency behavior for the smallest particles depending on the kind of coating, indicating different electronic spin dynamics. On the other hand, no differences were found in the relaxivity of the biggest particles when the coating was changed.
Article
Crystallography
Fabio Santanni, Laura Chelazzi, Lorenzo Sorace, Grigore A. Timco, Roberta Sessoli
Summary: Heterotopic ligands with chemically different binding centers are used to obtain heteronuclear metal complexes with different paramagnetic centers. This molecular approach has the potential to yield multi-spin adducts for quantum information processing. This study reports the structural and magnetic characterization of a novel adduct {Cr(pybd)(3)[Cu(cyclen)](2)}(BF4)(4), which demonstrates weak magnetic couplings and maintains distinctive EPR signals for Cr3+ and Cu2+ moieties.
Article
Chemistry, Physical
Claudio Pereti, Kevin Bernot, Thierry Guizouarn, Frantisek Laufek, Anna Vymazalova, Luca Bindi, Roberta Sessoli, Duccio Fanelli
Summary: We propose an approach based on DeepSet technology for supervised classification and regression of superconductive materials. The method takes the chemical constituents as input, avoiding artefacts from ordering in the list. Successful performance is achieved in classifying superconducting materials and quantifying their critical temperature. Using the trained neural network, we searched the International Mineralogical Association list and identified three superconducting candidates, confirming superconductivity in the synthetic analogue of michenerite and observing it for the first time in monchetundraite with critical temperatures in good agreement with theory predictions. This marks the first certified superconducting material identified through artificial intelligence methodologies.
NPJ COMPUTATIONAL MATERIALS
(2023)
Review
Chemistry, Physical
Mariya Vorobyova, Fabio Biffoli, Walter Giurlani, Stefano Mauro Martinuzzi, Maximilian Linser, Andrea Caneschi, Massimo Innocenti
Summary: Physical Vapor Deposition (PVD) is a widely used process for protective and hard coatings in various industrial applications. While previously dominated by electroplating processes, PVD has recently emerged in fields like fashion. The future aims to replace hazardous electrochemical processes restricted by the European Union with PVD coatings. Currently, a combination of both techniques is employed for new aesthetic features, making PVD of primary interest in the decorative field and fashion industry.
Article
Materials Science, Multidisciplinary
Carlo Andrea Mattei, Vincent Montigaud, Bertrand Lefeuvre, Vincent Dorcet, Gilles Argouarch, Olivier Cador, Boris Le Guennic, Olivier Maury, Claudia Lalli, Yannick Guyot, Stephan Guy, Cyprien Gindre, Amina Bensalah-Ledoux, Francois Riobe, Bruno Baguenard, Fabrice Pointillart
Summary: Lanthanide ions have attracted significant interest due to their optical and magnetic properties. The combination of single-molecule magnet (SMM) behavior and circularly polarized luminescence (CPL) in a single molecular system is rare and deserves attention for the design of multifunctional materials. Chiral one-dimensional coordination compounds involving Yb(iii) center and BINOL-derived bisphosphate ligands exhibited field-induced SMM behavior and near infrared CPL in the solid state, as characterized by X-ray diffraction.
JOURNAL OF MATERIALS CHEMISTRY C
(2023)
Review
Chemistry, Multidisciplinary
Fabrice Pointillart, Kevin Bernot, Boris Le Guennic, Olivier Cador
Summary: This review article provides a comprehensive description of the influence of nuclear spin, namely the hyperfine interaction, on the magnetic properties of lanthanide single-molecule magnets (SMMs) and on quantum information processing of qudit. The article analyzes this influence for non-Kramers and Kramers lanthanide SMMs, as well as for the electronic distribution of the electron in 4f orbitals, i.e. oblate and prolate ions. Additionally, the role of magnetic interactions in isotopically enriched polynuclear Dy(iii) SMMs is discussed, along with the possible effect of superhyperfine interaction due to the nuclear spin of elements surrounding the lanthanide centre. The effect of nuclear spin on the dynamics of lanthanide SMMs is demonstrated using various techniques such as magnetometry, muon spectroscopy, and Mossbauer and Resonance Vibrational Spectroscopies.
CHEMICAL COMMUNICATIONS
(2023)
Article
Chemistry, Multidisciplinary
Hao Wang, Zhenhua Zhu, Leo La Droitte, Wuping Liao, Olivier Cador, Boris Le Guennic, Jinkui Tang
Summary: Two luminescent Tb(iii)-calixarene aggregates with architectures of 1D chain (1) and 3D network (2) have been synthesized, and their single-molecule toroidal (SMT) characteristics have been experimentally investigated with the support of ab initio calculations. Aggregate 2 with a 3D structure is the first covalently bonded 3D SMT polymer that has been successfully synthesized.
Article
Chemistry, Multidisciplinary
Florian Benner, Leo La Droitte, Olivier Cador, Boris Le Guennic, Selvan Demir
Summary: A judicious combination of radical ligands with paramagnetic metal ions elicits strong magnetic exchange coupling, which leads to important properties for future technologies. The metal-radical approach aids in effective magnetic communication, especially for lanthanide ions. The presented complexes of bisbenzimidazole-based dilanthanide exhibit strong antiferromagnetic coupling and single-molecule magnetism, showing potential for applications in organic radical bridge materials.
Review
Chemistry, Inorganic & Nuclear
Paolo Arosio, Francesco Orsini, Francesca Brero, Manuel Mariani, Claudia Innocenti, Claudio Sangregorio, Alessandro Lascialfari
Summary: In this perspective article, we review the most significant case studies on magnetic nanoparticles for potential applications in nanomedicine, especially in magnetic resonance imaging. The dependence of the relaxation behavior of magnetic nanoparticles on their chemico-physical properties is discussed in detail. The correlations between the efficiency of magnetic nanoparticles as contrast agents in magnetic resonance imaging and their magnetic core (mainly iron oxides), size and shape, and the coating and solvent used for biocompatibility and dispersibility in physiological media are critically reviewed. Finally, the heuristic model proposed by Roch and coworkers is presented, and its advantages and limitations are highlighted through the analysis of a large amount of experimental data.
DALTON TRANSACTIONS
(2023)
Article
Chemistry, Inorganic & Nuclear
Manuel Imperato, Alessio Nicolini, Marco Borsari, Matteo Briganti, Mario Chiesa, Yu-Kai Liao, Antonio Ranieri, Arsen Raza, Enrico Salvadori, Lorenzo Sorace, Andrea Cornia
Summary: We investigated the performance of heterobimetallic lantern complexes [PtVO(SOCR)4] as charge neutral electronic qubits based on vanadyl complexes. The results showed that these complexes exhibit good spin coherence properties, making them suitable for applications in materials science and quantum technologies.
INORGANIC CHEMISTRY FRONTIERS
(2023)
Article
Chemistry, Inorganic & Nuclear
Angela Lis, Viorica Gladchi, Gheorghe Duca, Sergey Travin
Summary: This work presents studies on the photochemical transformations of TU and Cys with the addition of Cu(II) or Fe(III) ions. The results show that the oxidation rate of the thiols increases significantly when Cu(II) or Fe(III) ions are added to the system. It has also been found that TU and Cys can form stable complex compounds with the studied metal ions. The oxidation rates of the thiols are found to depend on the radiation intensity and emission spectrum of the irradiation sources.
INORGANICA CHIMICA ACTA
(2024)
Article
Chemistry, Inorganic & Nuclear
Cristiane F. A. Teixeira, Estefane I. Teixeira, J. P. C. Nascimento, M. Amilcar Junior, L. M. C. Pinto, Anderson R. L. Caires, G. B. Alcantara, Ana C. Micheletti, Victor M. Deflon, Davi F. Back, Heveline Silva, Lucas Pizzuti, Gleison Antonio Casagrande
Summary: Novel binuclear heteroleptic copper(I) complexes based on mixed DPPE/thiocarbamoyl-pyrazoline ligands were synthesized and structurally characterized. These complexes exhibited similar structural behavior around the Copper(I) atoms and showed promising antimicrobial and anticancer activities.
INORGANICA CHIMICA ACTA
(2024)
Article
Chemistry, Inorganic & Nuclear
Chen Chen, Li Liu, Xin-Xin Zhong, Fa-Bao Li, Hai-Mei Qin
Summary: Thermally activated delayed fluorescent (TADF) Cu(I) halide complexes with short lifetimes and intense emissions were synthesized and characterized. These complexes exhibit intense green to yellow-green delayed fluorescence and are suitable for OLED devices.
INORGANICA CHIMICA ACTA
(2024)
Article
Chemistry, Inorganic & Nuclear
Tian-Yu Zhang, Xue-Qian Wu, Heng-Yu Ruan, Yi Yuan, Le Wang, Ya-Pan Wu, Qing-Wen Han, Ruan Chi, Dong-Sheng Li
Summary: In this study, a novel Ni(II)-based metal-organic framework with good electrocatalytic oxidation performance was successfully synthesized, showing potential for direct alcohol fuel cells.
INORGANICA CHIMICA ACTA
(2024)
Article
Chemistry, Inorganic & Nuclear
Susanta Das Baishnab, R. N. Dutta Purkayastha, Waldemar Maniukiewicz, Rosa M. Gomila, Antonio Frontera
Summary: The synthesis, structure, and DNA binding ability of three decavanadate complexes containing cationic organic moieties were reported. The complexes were characterized by various techniques and their solid-state structures were analyzed. The complexes showed interesting assembly patterns and exhibited moderately strong intercalative binding with CTDNA. Additionally, their micellization behavior in the presence of the surfactant CTAB was studied.
INORGANICA CHIMICA ACTA
(2024)
Review
Chemistry, Inorganic & Nuclear
Jubaraj B. Baruah
Summary: Isomorphous series are generated by replacing atoms or molecules to form materials with similar compositions. They allow modulation of structure and properties, and generate equivalent compositions with novel material properties. The study of stereo-electronic aspects of different equivalent compositions can improve the utility of the original composition.
INORGANICA CHIMICA ACTA
(2024)
Article
Chemistry, Inorganic & Nuclear
Kamelah S. Al-Rashdi, Bandar A. Babgi, Ehab M. M. Ali, Bambar Davaasuren, Abdul-Hamid M. Emwas, Mariusz Jaremko, Mark G. Humphrey, Mostafa A. Hussien
Summary: Tridentate ligands were used to synthesize a set of palladium complexes, which were characterized and found to have DNA and BSA binding abilities. The complexes also showed differences in anticancer activities.
INORGANICA CHIMICA ACTA
(2024)
Article
Chemistry, Inorganic & Nuclear
Diane Isaacs, Chandler Cox, Mark A. Bezpalko, W. Scott Kassel, William G. Dougherty
Summary: The structure and electrochemical properties of zinc(II) complexes with a face-capping ligand have been investigated, revealing the effect of the ligand on bound semiquinonate (SQ) radicals. The substitution pattern of the SQ ring plays a crucial role in determining the fate of the bound SQ radicals. Additionally, the protective pocket formed by the ligand's phenyl substituents is unable to prevent decomposition of SQ radicals with minimal steric bulk, suggesting that substitution of the SQ ring is the main contributor to their stabilization.
INORGANICA CHIMICA ACTA
(2024)
Article
Chemistry, Inorganic & Nuclear
Xingliang Chen, Zhiqiang Jiang
Summary: Here, a series of zinc tetrahedral tetrazolate frameworks (Zn-TTFs) are presented, and it is demonstrated that rotation of carboxyl group can generate structural diversity. Compound 3 exhibits a unique zeolite-like structure, while compound 4 shows both super acid and alkali resistance.
INORGANICA CHIMICA ACTA
(2024)
Article
Chemistry, Inorganic & Nuclear
Ankita Puri, Allison Mcaninch, Sheng Shu, Khashayar Rajabimoghadam, Maxime A. Siegler, Marcel Swart, Isaac Garcia-Bosch
Summary: In this article, the synthesis and characterization of copper, nickel, and palladium complexes bound by bidentate ligands derived from ortho-phenylenediamine are described. The complexes contain tunable H-bond donors and their crystal structures reveal intramolecular H-bonding interactions between the ligand scaffolds. Variations in the coordination sphere led to the isolation of the complexes in square-planar or twisted pseudo-tetrahedral geometries. Structural analysis showed that intramolecular H-bonding interactions can be altered by disrupting the bonds between countercations, solvent of crystallization, and ligand scaffold, resulting in changes in the geometry of the complexes. DFT calculations confirmed that Cu complexes prefer twisted geometries while Ni and Pd complexes favor square-planar geometries.
INORGANICA CHIMICA ACTA
(2024)
Article
Chemistry, Inorganic & Nuclear
Laiane dos Santos Oliveira, Pedro Henrique de Souza Guarda, Leticia Bazilio Rosa, Gustavo Clauss Rodrigues, Daniele Daiane Affonso, Joao Ernesto de Carvalho, Igor Andrade Santos, Mark Harris, Douglas Hideki Nakahata, Jose Ricardo Sabino, Danilo Ciccone Miguel, Ana Lucia Tasca Gois Ruiz, Ana Carolina Gomes Jardim, Camilla Abbehausen
Summary: Chalcones are chemical precursors of flavonoids that have various biological properties. In this study, novel copper(II)-2'-hydroxy-4-benzyloxychalcone complexes were synthesized and evaluated for their antileishmanial, antiproliferative, and antiviral activities. The results demonstrated that these complexes showed potential effects against tumor cells, leishmania parasites, and SARS-CoV-2 virus. The study also highlighted the influence of ligand structure on biological activity.
INORGANICA CHIMICA ACTA
(2024)
Review
Chemistry, Inorganic & Nuclear
Archana Thakur, Harpreet Kaur, Vishal Tyagi
Summary: This review article discusses the findings of research on the 13C NMR spectra of di- and tri-butyltin carboxylates, highlighting the importance of 13C NMR chemical shifts in determining the chemical surroundings of carbon nuclei and their role in structure elucidation.
INORGANICA CHIMICA ACTA
(2024)
Article
Chemistry, Inorganic & Nuclear
Qiang Zhao, Qi-Yang Li, Zhi Shen, Guo Zang, Wen-Jun Lv
Summary: In this study, five metal complexes were synthesized using a solvothermal reaction and their structures were analyzed by single crystal X-ray diffraction. Fluorescence and magnetic properties of some complexes were also investigated.
INORGANICA CHIMICA ACTA
(2024)
Article
Chemistry, Inorganic & Nuclear
Jeremy Erb, Darcy Setter, Jake Swavey, Frederick Willits, Shawn Swavey
Summary: Three BODIPY-Ru(II) complexes were synthesized by coordinating [Ru(bpy)2Cl]+ complexes to BODIPY ligands. The spectroscopic and electrochemical properties of the complexes were characterized. The complexes exhibited intense absorption peaks due to the pi pi* transitions localized on the BODIPY core, and additional charge transfer transitions associated with the metal center. The complexes showed significant singlet oxygen generation and were able to induce photo-nicking of DNA.
INORGANICA CHIMICA ACTA
(2024)
Article
Chemistry, Inorganic & Nuclear
Sahin Reja, Dilip Sarkar, Kaushik Sarkar, Deboshmita Mukherjee, T. K. S. Fayaz, Palash Sanphui, Rajesh Kumar Das
Summary: A promising bioinspired metallocatalyst has been produced and characterized, showing high catalytic activity in oxygen dependant enzymatic radical pathway. The catalyst also exhibits inter and intra molecular H-bonding and C-H-pi interactions.
INORGANICA CHIMICA ACTA
(2024)
