Journal ArticleDOI
Variable magnetic interactions between S = 1/2 cation radical salts of functionalizable electron-rich dithiolene and diselenolene Cp2Mo complexes.
Talia Bsaibess,Michel Guerro,Yann Le Gal,Daad Sarraf,Nathalie Bellec,Marc Fourmigué,Frédéric Barrière,Vincent Dorcet,Thierry Guizouarn,Thierry Roisnel,Dominique Lorcy +10 more
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TLDR
Crystal structure determinations show that the S/Se substitution in the metallacycle systematically affords isostructural salts, while the Cp( 2)Mo(R-thiazdt) complexes with R equals ethyl or CH(2)CH(2]OH can adopt different structures, depending on the involvement of the hydroxyl group into intra- or intermolecular hydrogen bonding interactions.Abstract:
A series of Cp(2)Mo(dithiolene) and Cp(2)Mo(diselenolene) complexes containing N-alkyl-1,3-thiazoline-2-thione-4,5-dithiolate ligand (R-thiazdt, R = Me, Et, CH(2)CH(2)OH) and N-alkyl-1,3-thiazoline-2-thione-4,5-diselenolate ligand (R-thiazds, R = Me, Et) have been synthesized. These heteroleptic molybdenum complexes have been characterized by electrochemistry, spectroelectrochemistry, and single crystal X-ray diffraction. They act as very good electron donor complexes with a first oxidation potential 200 mV lower than in the prototypical Cp(2)Mo(dmit) complex and exhibit almost planar MoS(2)C(2) (or MoSe(2)C(2)) metallacycles. All five complexes formed charge transfer salts with a weak (TCNQ) and a strong acceptor (TCNQF(4)), affording ten different charge-transfer salts, all with 1:1 stoichiometry. Crystal structure determinations show that the S/Se substitution in the metallacycle systematically affords isostructural salts, while the Cp(2)Mo(R-thiazdt) complexes with R equals ethyl or CH(2)CH(2)OH can adopt different structures, depending on the involvement of the hydroxyl group into intra- or intermolecular hydrogen bonding interactions. Magnetic susceptibility data of the salts are correlated with their structural organization, demonstrating that a face-to-face organization of the Me-thiazdt (or Me-thiazds) ligand favors a strong antiferromagnetic interaction, while the bulkier R = Et or R = CH(2)CH(2)OH substituents can completely suppress such intermolecular interactions, with the added contribution of hydrogen bonding to the solid state organization.read more
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Chalcogen bonding in coordination chemistry
TL;DR: The chalcogen bond (ChB) is defined as a noncovalent interaction between the electron density deficient region (so-called as σ or π hole) of a covalently-bonded atom and a nucleophilic (Nu) site in the same (intramolecular) or another molecular entity as mentioned in this paper .
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Hydrogen-bonding interactions in a single-component molecular conductor: a hydroxyethyl-substituted radical gold dithiolene complex.
TL;DR: Comparison of the crystal structures and transport and magnetic properties with those of the prototypical [Au(Et-thiazdt)2](•) single-component conductor shows that the replacement of ethyl by a slightly bulkier hydroxyethyl substituent affects only weakly the overlap interactions.
Journal ArticleDOI
Hydrogen bonding interactions in single component molecular conductors based on metal (Ni, Au) bis(dithiolene) complexes
TL;DR: Introduction of hydrogen bonding (HB) interactions in single component conductors derived from nickel and gold bis(dithiolene) complexes is explored and demonstrates how the strength of the HB directing motif can control the overall structural arrangement to stabilize the same structure despite a different electron count.
Journal ArticleDOI
Gold dithiolene complexes: easy access to 2-alkylthio-thiazoledithiolate complexes.
Agathe Filatre-Furcate,Pascale Auban-Senzier,Marc Fourmigué,Thierry Roisnel,Vincent Dorcet,Dominique Lorcy +5 more
TL;DR: In the presence of MeI or EtI, N-tert-butyl-1,3-thiazoline-2-thione derivatives undergo a transformation to 2-alkylthio- thiazoledithiolate pro-ligands with elimination of the tert- butyl substituent.
Journal ArticleDOI
A sulfur-rich π-electron acceptor derived from 5,5′-bithiazolidinylidene: charge-transfer complex vs. charge-transfer salt
Yann Le Gal,Mangaiyarkarasi Rajkumar,Antoine Vacher,Vincent Dorcet,Thierry Roisnel,Marc Fourmigué,Frédéric Barrière,Thierry Guizouarn,Dominique Lorcy +8 more
TL;DR: In this article, two synthetic approaches to substitute a dicyanovinylidene group, CC(CN)2 to a thioketone (CS) in the recently described DEBTTT acceptor were described.
References
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Journal ArticleDOI
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