Results 1 to 10 of about 10,693 (226)
A Quantitative Molecular Orbital Perspective of the Chalcogen Bond [PDF]
ChemistryOpen, 2021 We have quantum chemically analyzed the structure and stability of archetypal chalcogen‐bonded model complexes D2Ch⋅⋅⋅A− (Ch = O, S, Se, Te; D, A = F, Cl, Br) using relativistic density functional theory at ZORA‐M06/QZ4P.
Lucas deAzevedo Santos +4 more
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Selenoxides as Excellent Chalcogen Bond Donors: Effect of Metal Coordination [PDF]
Molecules, 2022 The chalcogen bond has been recently defined by the IUPAC as the attractive noncovalent interaction between any element of group 16 acting as an electrophile and any atom (or group of atoms) acting as a nucleophile.
Sergi Burguera +3 more
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Chalcogen Bond Involving Zinc(II)/Cadmium(II) Carbonate and Its Enhancement by Spodium Bond [PDF]
Molecules, 2021 Carbonate MCO3 (M = Zn, Cd) can act as both Lewis acid and base to engage in a spodium bond with nitrogen-containing bases (HCN, NHCH2, and NH3) and a chalcogen bond with SeHX (X = F, Cl, OH, OCH3, NH2, and NHCH3), respectively.
Na Liu, Xiaoying Xie, Qingzhong Li
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Green Synthesis and Catalysis, 2021 The introduction of new interactions into organic transformation is an objective of fundamental importance. Chalcogen bond has emerged as an unconventional type of noncovalent interaction which provides a useful synthetic tool for organocatalysis and has
Weitao Yan +3 more
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Chalcogen bond-guided conformational isomerization enables catalytic dynamic kinetic resolution of sulfoxides [PDF]
Nature Communications, 2022 Conformational isomerization of organic molecules can be guided by noncovalent interactions. Here, the authors report the synthesis of chiral sulfoxides catalyzed by N-heterocyclic carbenes; intramolecular chalcogen bonding interactions are key for ...
Jianjian Liu +4 more
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Activating Chalcogen Bonding (ChB) in Alkylseleno/Alkyltelluroacetylenes toward Chalcogen Bonding Directionality Control [PDF]
Angewandte Chemie International Edition, 2020 AbstractActivation of a deep electron‐deficient area on chalcogen atoms (Ch=Se, Te) is demonstrated in alkynyl chalcogen derivatives, in the prolongation of the (C≡)C−Ch bond. The solid‐state structures of 1,4‐bis(methylselenoethynyl)perfluorobenzene (1Se) show the formation of recurrent chalcogen‐bonded (ChB) motifs.
Arun Dhaka +5 more
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Chalcogen‐Bonding Catalysis with Telluronium Cations [PDF]
Angewandte Chemie, 2021 AbstractChalcogen bonding results from non‐covalent interactions occurring between electrodeficient chalcogen atoms and Lewis bases. Among the chalcogens, tellurium is the strongest Lewis acid, but Te‐based compounds are scarcely used as organocatalysts.
Weiss, Robin +3 more
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Bifurcated Chalcogen Bonds Based on One σ-Hole
Organic Materials, 2022 Chalcogen bonds are noncovalent interactions and are increasingly coming into focus for the design of complex structures in research areas such as crystal engineering, molecular recognition and catalysis. Conceptionally, chalcogen bonds can be considered
Saber Mehrparvar +3 more
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Assessing the Possibility and Properties of Types I and II Chalcogen Bonds
Crystals, 2023 Type I and II halogen bonds are well-recognized motifs that commonly occur within crystals. Quantum calculations are applied to examine whether such geometries might occur in their closely related chalcogen bond cousins. Homodimers are constructed of the
Steve Scheiner
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Supramolecular rectangles through directional chalcogen bonding [PDF]
Chemical Communications, 2021 Supramolecular rectangles are built from the 2+2 chalcogen bonding-based (ChB) association of 1,8-bis(telluromethylethynyl)-anthracene and linear ditopic Lewis bases.
Dhaka, Arun +4 more
openaire +3 more sources