Results 191 to 200 of about 8,987 (212)
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Enhancing chalcogen bonding by metal coordination
Dalton Transactions, 2022By exploring the CSD in combination with DFT calculations, we demonstrate that chalcogen bonding interactions are strongly enhanced by metal coordination.
Rosa M. Gomila +2 more
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Chalcogen Bond: A Sister Noncovalent Bond to Halogen Bond
The Journal of Physical Chemistry A, 2009A sister noncovalent bond to halogen bond, termed chalcogen bond, is defined in this article. By selecting the complexes H(2)CS...Cl(-), F(2)CS...Cl(-), OCS...Cl(-), and SCS...Cl(-) as models, the bond-length change, interaction energy, topological property of the electron charge density and its Laplacian, and the charge transfer of the chalcogen bond ...
Weizhou, Wang, Baoming, Ji, Yu, Zhang
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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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A World Beyond Hydrogen Bonds?—Chalcogen–Chalcogen Interactions Yielding Tubular Structures
Chemistry – A European Journal, 2003AbstractIt is shown that tubular structures arise in the solid state through close chalcogen–chalcogen (X⋅⋅⋅X) contacts. As examples a variety of cyclic systems containing sulfur and selenium centers is presented. Common to all of them are close contacts between the chalcogen centers of neighboring stacks giving rise to a zigzag or ladder‐type ...
Rolf, Gleiter +2 more
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Experimental evidence of chalcogen bonding at oxygen
Chemical Communications, 2020Ano-nitro-O-aryl oxime was observed to exhibit a short O⋯O contact, which exhibited characteristics consistent with a chalcogen bond.
Thomas Fellowes +2 more
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Topological reaction sites – very strong chalcogen bonds
Phys. Chem. Chem. Phys., 2014The analysis of interactions in complexes of S(CN)2, Se(CN)2, SFCl and SeFCl with F(-) and Cl(-) anions is performed here. The sulphur and selenium atoms act in these complexes as Lewis acid centres interacting with fluorine and chlorine anions. The arrangement of sub-units in complexes is in agreement with the σ-hole concept; particularly it is a ...
Esmail, Alikhani +3 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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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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