Article
Chemistry, Inorganic & Nuclear
Mario Cicac-Hudi, Christoph M. Feil, Nicholas Birchall, Martin Nieger, Dietrich Gudat
Summary: The reaction between the iodide salt of a secondary imidazolio-iodophosphine and an imidazolio-phosphide in the presence of GaI3 results in the isolable salt of a dicationic, bis(imidazolio)-substituted dihydro-diphosphine. Further reactions and computational studies have provided insights into the structure, stereochemistry, and bonding situation of the diphosphine dications. NMR spectroscopy showed that the dications exist as a mixture of meso- and rac-diastereomers in solution.
DALTON TRANSACTIONS
(2022)
Article
Chemistry, Multidisciplinary
Mithilesh Kumar Nayak, Pallavi Sarkar, Benedict J. Elvers, Sakshi Mehta, Fangyuan Zhang, Nicolas Chrysochos, Ivo Krummenacher, Thangavel Vijayakanth, Ramakirushnan Suriya Narayanan, Ramapada Dolai, Biswarup Roy, Vishal Malik, Hemant Rawat, Abhishake Mondal, Ramamoorthy Boomishankar, Swapan K. Pati, Holger Braunschweig, Carola Schulzke, Prince Ravat, Anukul Jana
Summary: In this study, a thermally stable dicationic diradical compound was synthesized and confirmed by EPR spectroscopy. The presence of the trans-1,4-cyclohexylene bridge was found to be essential for the successful isolation of this compound.
Article
Chemistry, Multidisciplinary
Tadanori Kurosawa, Toshihiro Okamoto, Yu Yamashita, Shohei Kumagai, Shun Watanabe, Jun Takeya
Summary: This study demonstrates a new strong and atmospherically stable p-dopant for semiconducting polymers, TAB-2TFSI, which can achieve high electrical conductivity and enhanced crystallinity. The concept of utilizing charged molecules as dopants is highly versatile and may accelerate the development of strong and stable dopants.
Article
Chemistry, Inorganic & Nuclear
Simran S. Saund, Maxime A. Siegler, V. Sara Thoi
Summary: This study presents a new dicationic rhenium bipyridyl complex capable of multielectron ligand-centered reductions. The research reveals an unusual reductively induced Hoffman-type elimination mechanism during electrolysis, identifying electrolytically susceptible groups and proposing key intermediates in the degradative pathway. The investigation highlights the complex interplay between the ligand and metal ion, providing insights for the future design of metal-organic catalysts.
INORGANIC CHEMISTRY
(2021)
Article
Chemistry, Physical
Nicole Onishi Feider, Shannon M. Mahurin, Chi-Linh Do-Thanh, Sheng Dai, De-en Jiang
Summary: A dicationic ionic liquid was studied through molecular dynamics simulations to examine its structural and gas separation properties, showing potential for enhanced CO2 interaction and promising application in carbon capture. Comparison between experimental and computational results further analyzed the structural features of the ionic liquid.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Article
Chemistry, Multidisciplinary
Kalyan Biswas, Jose I. Urgel, Kun Xu, Ji Ma, Ana Sanchez-Grande, Pingo Mutombo, Aurelio Gallardo, Koen Lauwaet, Benjamin Mallada, Bruno de la Torre, Adam Matej, Jose M. Gallego, Rodolfo Miranda, Pavel Jelinek, Xinliang Feng, David Ecija
Summary: This study reported the successful synthesis of a hexabenzocoronene derivative embedded with graphitic nitrogen on the Au(111) surface using on-surface assisted cyclodehydrogenation, revealing a novel avenue for designing carbon nanostructures with dicationic properties. By introducing the concept of cationic nitrogen doping of nanographenes on surfaces, the research opens up new possibilities for the development of innovative carbon nanostructures.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Chemistry, Inorganic & Nuclear
Laura Rotundo, Shahbaz Ahmad, Chiara Cappuccino, Dmitry E. Polyansky, Mehmed Z. Ertem, Gerald F. Manbeck
Summary: A dicationic Re bipyridine-type complex has been synthesized and studied for its electrochemical behavior under Ar and CO2. The presence of tetra-alkylammonium cations shifts the electrocatalytic potential for CO2 reduction. Cyclic voltammetry, infrared spectroelectrochemistry, and theoretical calculations were used to analyze the electrochemical mechanisms in different solvents and in the presence of weak acids.
INORGANIC CHEMISTRY
(2023)
Article
Chemistry, Physical
Shrishti P. Pandey, Pamela Jha, Prabhat K. Singh
Summary: YOPRO-1 is an economical, simple, quick, highly selective, and sensitive dicationic cyanine derivative for effective detection of Heparin with dual read-out capability. With commercial availability and better response in high serum matrix, YOPRO-1 represents a significant advancement in the field of Heparin sensing.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Article
Biochemistry & Molecular Biology
Viviana Teresa Orlandi, Eleonora Martegani, Fabrizio Bolognese, Nicola Trivellin, Francesco Garzotto, Enrico Caruso
Summary: Antimicrobial photodynamic therapy (aPDT) is gaining attention as a promising tool for treating microbial infections and sanitizing environments. A study on a panel of photosensitizers found that dicationic diaryl-porphyrins show potential in efficiently photoinactivating Pseudomonas aeruginosa, including inhibiting biofilm formation. These findings suggest the potential applicability of dicationic diaryl-porphyrins in different fields for combating difficult-to-treat microbes like P. aeruginosa.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2021)
Article
Chemistry, Physical
Shanika Abeysooriya, Minjae Lee, Luke A. O'Dell, Jennifer M. Pringle
Summary: This study reports the synthesis and characterization of two new dicationic salts and investigates their physicochemical properties using techniques such as solid-state NMR. The results show that dicationic salts with longer alkyl-side chain exhibit improved transport properties. Further exploration of these organic salts as electrolyte materials was conducted by mixing them with lithium salts, showing an increase in conductivity. Solid-state NMR analysis suggests that lithium and [TFSI](-) ions contribute significantly to the ionic conductivity.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2022)
Article
Chemistry, Multidisciplinary
Antoine Barthelemy, Harald Scherer, Michael Daub, Alexis Bugnet, Ingo Krossing
Summary: The reaction between bisdicyclohexylphosphinoethane (dcpe) and subvalent M(I) sources [M-I(PhF)(2)][pf] (M=Ga+, In+; [pf]-=[Al(ORF)(4)]-; R-F=C(CF3)(3)) resulted in the formation of salts [{M(dcpe)}(2)][pf](2), which contain the first reported dicationic, trans-bent digallene, and diindene structures. The M-I double bonds, which display a ditetrylene-like structure, are surprisingly short. Quantum chemical calculations and molecular analyses were conducted to compare the bonding situation in these salts with that in the isoelectronic and isostructural, but neutral digermenes and distannenes.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Applied
Lili Zhang, Hongmei Yang, Huaxin Zhang
Summary: In this study, a nitrogen-rich hyper-crosslinked polymer (HCP-N) was constructed using an imidazolyl dicationic ionic liquid as a monomer for the separation of 4-nitrophenol (4-NP) from wastewater. The synthesized HCP-N showed good adsorption kinetics and isotherm behavior. The presence of coexisted metal ions, such as Pb2+, significantly increased the adsorption capacity of HCP-N. The adsorption mechanism of 4-NP on HCP-N involved hydrogen bonding, electrostatic interactions, and pi-pi interactions. Furthermore, the adsorbent could be recycled and reused.
MICROPOROUS AND MESOPOROUS MATERIALS
(2022)
Article
Chemistry, Physical
Pradip K. Bhowmik, Jung J. Koh, David King, Haesook Han, Benoit Heinrich, Bertrand Donnio, Daniel Zaton, Alfonso Martinez-Felipe
Summary: Two series of new dicationic stilbazolium salts were synthesized and characterized, showing high thermal stability, crystalline polymorphism, and potential for advanced materials in optoelectronic devices.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Article
Chemistry, Multidisciplinary
Prashant S. Kulkarni, Prathamesh Ranjane, Karun Mishra, Swati Sundararajan, Sanjay Kamble
Summary: This investigation presents the synthesis and characterization of a new series of ionic liquids (ILs) for CO2 absorption, aiming to develop more efficient and sustainable technologies. Different ILs were synthesized through modifications and metathesis reactions, and their properties were evaluated using various techniques. The sorption investigation showed that the IL with [BF4]- anion demonstrated the highest CO2 absorption capacity and can be efficiently regenerated and reused. This work highlights the adaptability of tetraalkylammonium-based dicationic ILs for various applications, including sustainable CO2 capture technology.
NEW JOURNAL OF CHEMISTRY
(2023)
Article
Biochemistry & Molecular Biology
Andrea Mezzetta, Luca Guglielmero, Angelica Mero, Giorgio Tofani, Felicia D'Andrea, Christian Silvio Pomelli, Lorenzo Guazzelli
Summary: The thermal and electrical properties of benzimidazole dicationic ionic liquids (BDILs) were investigated, revealing that bistriflimide BDILs are more stable than bromide BDILs. The spacer length plays a role in thermal behavior, and dicationic ILs offer more structural diversity and ease of property tuning compared to monocationic ILs.
Article
Chemistry, Inorganic & Nuclear
Ren Kai Edward Neo, Han Wee Ong, Zhen Xuan Wong, Elumalai Kumaran, Rakesh Ganguly, Weng Kee Leong, Yong Leng Kelvin Tan
Summary: Thermal activation of Ru-4(mu-H)(4)(CO)(12) results in the formation of substitution products 2a and 2b with diphenylvinylphosphine ligands terminally bound to ruthenium centers. The clusters retain their structural integrity at elevated temperatures and maintain the D2d symmetry of the parent cluster 1.
JOURNAL OF CLUSTER SCIENCE
(2022)
Article
Chemistry, Applied
Rishi Ranjan, Bidyut Kumar Kundu, Reena Kyarikwal, Rakesh Ganguly, Suman Mukhopadhyay
Summary: The research on visible-light-driven photoreactions using metal complexes as catalysts is currently a hotspot in the development of environmentally friendly sustainable processes. Newly synthesized copper complexes can efficiently and selectively oxidize primary alcohols to aldehydes under visible light irradiation, and the catalysts can be recycled multiple times without significant loss of catalytic activity.
APPLIED ORGANOMETALLIC CHEMISTRY
(2022)
Article
Chemistry, Inorganic & Nuclear
Pragti, Bidyut Kumar Kundu, Shrish Nath Upadhyay, Nilima Sinha, Rakesh Ganguly, Ivo Grabchev, Srimanta Pakhira, Suman Mukhopadhyay
Summary: In this study, four organometallic Ru(II)-arene complexes were designed and synthesized, and it was found that they possess anticancer, antimetastatic, and two-photon cell imaging abilities. These complexes also demonstrate good catalytic activity in the transfer hydrogenation reaction and strong interactions with biological molecules and DNA. Furthermore, the complexes show capabilities to inhibit cell migration and generate intracellular reactive oxygen species in breast cancer cells.
DALTON TRANSACTIONS
(2022)
Article
Chemistry, Physical
Nishithendu Bikash Nandi, Atanu Purkayastha, Julia Klak, Rakesh Ganguly, Susanta Ghanta, Tarun Kumar Misra
Summary: Two monomeric copper(II) complexes based on 1,3-dimethyl-5-(4'/3'-pyridylazo)-6-aminouracil were synthesized and characterized, showing high redox stability and weak antiferromagnetic interaction. These complexes interact with Bovine Serum Albumin through specific binding sites, indicating their potential as multi-functional materials.
JOURNAL OF MOLECULAR STRUCTURE
(2022)
Article
Crystallography
Trilochan Rakshit, Bikramaditya Mandal, Anwesha Haldar, Dhrubajyoti Mondal, Debdas Mandal, Rakesh Ganguly
Summary: A novel square-planar copper(II) complex with sterically constrained tridentate phenol-based ligand was synthesized and characterized. The complex showed catechol oxidase activity and has potential applications.
Article
Chemistry, Multidisciplinary
Ying Sim, Felix Leon, Gavin Hum, Si Jia Isabel Phang, How Chee Ong, Rakesh Ganguly, Jesus Diaz, Jack K. Clegg, Felipe Garcia
Summary: A two-step synthetic route using pre-arranged building blocks was successfully utilized to design and synthesize a large unfolded tetrameric macrocycle in this study. The obtained macrocycle has an unfolded open-face cavity area of 110.1 angstroms.
COMMUNICATIONS CHEMISTRY
(2022)
Article
Chemistry, Organic
Debdas Mandal, Anwesha Haldar, Priyanka Chakraborty, Rakesh Ganguly
Summary: A mononuclear octahedral mixed-ligand cobalt (II) complex has been synthesized and characterized by single-crystal X-ray diffraction study. The complex adopts an octahedral environment with a facially coordinating tetradentate ligand and an ancillary ligand.
Article
Chemistry, Multidisciplinary
Ying Kai Loh, Mohand Melaimi, Dominik Munz, Guy Bertrand
Summary: Carbenes, once considered laboratory curiosities, now serve as powerful tools in chemistry and material sciences. This article describes the synthesis of a carbon-based dual ambiphilic carbene, which can activate organic molecules in 1,1- and 1,3-fashion. It also exhibits an unprecedented reversible intramolecular dearomative [3+2] cycloaddition, allowing it to mask itself as an air-stable cycloadduct.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Chemistry, Multidisciplinary
Bikramaditya Mandal, Anwesha Haldar, Rakesh Ganguly, Rajat Saha, Debdas Mandal
Summary: The design of an achiral Fe(III)-complex as an amino acid sensor that shows highly selective sensing of histidine over others in an aqueous methanolic solution has been developed. The complex exhibits structural characteristics of a simple mononuclear complex with distorted octahedral geometry. It forms an achiral 3D supramolecular structure through supramolecular hydrogen bonding interactions. The complex also acts as an effective catalyst in the oxidation reaction of 3,5-di-tert-butylcatechol in methanol solvent.
NEW JOURNAL OF CHEMISTRY
(2023)
Article
Chemistry, Physical
Rishi Ranjan, Argha Chakraborty, Rakesh Ganguly, Suman Mukhopadhyay
Summary: Transition metal complexes catalyzed visible-light assisted photoreactions are highly demanded for sustainable processes. In this study, copper-containing photocatalysts were developed using a newly synthesized Schiff base ligand. The catalysts showed efficient cleavage of lignin C-C bonds under visible light irradiation, and could be recovered and recycled multiple times without significant loss of efficiency. The study also explored the mechanistic pathway of the degradation reaction and demonstrated the catalysts' potential for lignin degradation using sunlight.
MOLECULAR CATALYSIS
(2023)
Article
Chemistry, Inorganic & Nuclear
Siyuan Zhai, Milena Petkovic, Dragoslav Vidovic
Summary: In this work, it is shown that three-coordinate mono-aminoboranes are not efficient hydroboration reagents unless they can form four-coordinate analogues. It is also demonstrated that imine-BH3 adduct(s) and mono-aminoboranes are not key intermediates in the Me2S-BH3 catalyzed hydroboration of imines. Instead, the Clark mechanism is believed to be mainly responsible for the observed hydroboration reactions in both of these reported studies.
Article
Chemistry, Multidisciplinary
Siyuan Zhai, Dragoslav Vidovic, Milena Petkovic
Summary: We investigated the 1,3-hydride shift during the formation of mono-aminoboranes from imine-BH3 adducts. Experimental and theoretical analyses suggest that this molecular rearrangement can occur through either intra-molecular or inter-molecular pathways. Isotope-based experiments and computational simulations support the bimolecular mechanism. Moreover, our results indicate that elevated temperature is necessary for the formation of mono-aminoboranes by supplying sufficient energy to overcome the reaction barrier.
NEW JOURNAL OF CHEMISTRY
(2023)
Article
Chemistry, Inorganic & Nuclear
Pragti, Sreshtha Nayek, Satyam Singh, Avinash Sonawane, Ivo Grabchev, Rakesh Ganguly, Suman Mukhopadhyay
Summary: In this study, three Ru(II) arene complexes with a bidentate benzimidazole-based ligand were synthesized and their antitumor activity was studied by varying the co-ligand X. The synthesized compounds showed good interactions with serum albumin proteins, had good drug stability and lipophilic character. They were found to bind with DNA and could induce apoptosis in cancer cells, as well as upregulate cleaved caspase-3 expression and downregulate BCLXL expression. These findings provide a new direction for the investigation of antitumor ruthenium-based metallodrugs using benzimidazole-based ligands.
DALTON TRANSACTIONS
(2023)
Article
Chemistry, Inorganic & Nuclear
Deepamali Dissanayake, Craig Forsyth, Dragoslav Vidovic
Summary: This research reports the synthesis and characterisation of several chiral aluminium compounds with oxazoline-containing beta-diketiminate type ligands. These chiral Lewis acid complexes, in combination with 1 equiv. of Na(BAr4Cl), were successfully used as catalysts in asymmetric Diels-Alder reactions between 1,3-cyclohexadiene and various chalcones. Increasing the steric demand of the ligands' achiral end resulted in improved enantioinduction for the cyclisation of 1,3-cyclohexadiene and chalcone. Furthermore, modifying the chiral end by introducing a tert-butyl group to the stereogenic center of the oxazoline fragment yielded the highest enantioselectivity value. The substrate scope was expanded to include several different dienophiles, generating enantiomeric excess values ranging from 24-68%.
DALTON TRANSACTIONS
(2023)
Article
Chemistry, Inorganic & Nuclear
Rishi Ranjan, Argha Chakraborty, Reena Kyarikwal, Rakesh Ganguly, Suman Mukhopadhyay
Summary: Visible-light driven photoreactions using transition metal complexes as catalysts are a current research hotspot in developing environmentally friendly sustainable processes. A binuclear Cu(II) complex synthesized using a Mannich base ligand has been characterized and found effective in catalyzing hydrogen auto-transfer and benzyl alcohol oxidation reactions under visible light irradiation. The mechanistic pathway for catalytic reactions has been explored using various experimental techniques.
DALTON TRANSACTIONS
(2022)
