Results 201 to 210 of about 4,166 (227)
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Supramolecular Covalence in Bifurcated Chalcogen Bonding
Chemistry – A European Journal, 2017AbstractSupramolecular interactions are generally classified as noncovalent. However, recent studies have demonstrated that many of these interactions are stabilized by a significant covalent component. Herein, for systems of the general structure [MX6]2−:YX2 (M=Se or Pt; Y=S, Se, or Te; X=F, Cl, Br, I), featuring bifurcated chalcogen bonding, it is ...
Pankaj Lochan Bora +4 more
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Chalcogen bonding in materials chemistry
Coordination Chemistry Reviews, 2020Abstract This review examines recent literature in search for evidence of the influence that chalcogen bonding has on the structure and properties of functional materials. Key examples from research on charge transfer salts, neutral heterocyclic free radicals, and paramagnetic coordination compounds are highlighted as intermolecular interactions are ...
Peter C. Ho +3 more
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Trifurcated Chalcogen Bond: Design and Synthesis
The Journal of Physical Chemistry ACompared with monofurcated chalcogen bonds and bifurcated chalcogen bonds, the theoretical and experimental studies on trifurcated chalcogen bonds and other multifurcated chalcogen bonds remain relatively underexplored. In this study, we first designed a series of trifurcated chalcogen bonds using 2,1,3-benzoselenadiazole and its derivatives as ...
Jin-Qiang Liu, Yu Zhang, Weizhou Wang
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The compounds with a lanthanoid-chalcogen bond
1995Three main types of complexes can be distinguished in the series of the titled compounds: (i) the homoleptic derivatives of thiols and selenols Ln(ER)3(E=S,Se), and their alkoxy (R’O)xLn(SR)3-x and amido [(Me3Si)2N] xLn(SR)3-xderivatives, (ii) the mixed cyclopentadienyl/organochalcogen complexes Cp2LnER (E=S,Se,Te) and (iii) the bis ...
M. N. Bochkarev +2 more
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Chalcogen–chalcogen-bond activation by an ambiphilic, doubly reduced organoborane
Tetrahedron, 2019Abstract The 9,10-dimethyl-9,10-dihydro-9,10-diboraanthracene dianion salt Li2[1] instantaneously reacts with the dichalcogens O2(tBu)2, S2Me2, S2(pTol)2, Se2Ph2, and Te2Ph2 under reductive cleavage of the chalcogen–chalcogen bonds to give lithium chalcogenides and neutral 1.
Esther von Grotthuss +4 more
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Cu clusters and chalcogen chalcogen bonds in various copper polychalcogenides
Coordination Chemistry Reviews, 2012Abstract Several new barium copper polychalcogenides were discovered during the last years. Their structures were all unprecedented, displaying a variety of different cationic copper clusters along with dimeric, trimeric, or infinite anionic polychalcogen units. Te22− pairs, bent V-shaped Te32− trimers, linear, hypervalently bonded Se34− trimers, and
Oottil Mayasree +3 more
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The Chalcogen Bond in Crystalline Solids: A World Parallel to Halogen Bond
Accounts of Chemical Research, 2019The distribution of the electron density around covalently bonded atoms is anisotropic, and this determines the presence, on atoms surface, of areas of higher and lower electron density where the electrostatic potential is frequently negative and positive, respectively.
Scilabra P., Terraneo G., Resnati G.
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Nonbonded Interaction: The Chalcogen Bond
2018Compared to canonical weak, nonbonded interactions, the research on the chalcogen bond (CB) is still in its infancy even if it can be easily considered fascinating. In this chapter a brief summary of its application is given. A general introductory section is detailed to place the CB in the context of weak interactions.
Eder João Lenardão +2 more
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Chalcogen Bonds in Protein Architecture
2015Nonbonded interactions between a divalent sulfur atom and polar functional groups, i.e., S…X (X = O, N, and S) interactions, have recently been demonstrated to stabilize protein structures to some extent and play putative roles in their function and evolution, thanks to the interplay of statistical analysis of protein structure databases and ...
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Inorganic Reaction Mechanism of Chalcogen-Chalcogen Bond
University Chemistry, 2017Ming-Zhe MA +4 more
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