Results 11 to 20 of about 3,178 (211)

Evidence for and evaluation of fluorine-tellurium chalcogen bonding. [PDF]

open access: yesChem Sci, 2023
The first in-depth characterization of Te–F chalcogen bonding in solution was achieved by designing and preparing specific Te derivatives followed by their NMR study.
Weiss R   +4 more
europepmc   +3 more sources

Selenium(IV) Polybromide Complexes: Structural Diversity Driven by Halogen and Chalcogen Bonding [PDF]

open access: yesMolecules, 2022
Reactions between bromoselenate(IV)-containing solutions, dibromine and salts of pyridinium-family organic cations resulted in structurally diverse, bromine-rich polybromine-bromoselenates(IV): (4-MePyH)5[Se2Br9][SeBr6](Br3)2 (1), (2-MePyH)2{[SeBr6](Br2)}
Nikita A. Korobeynikov   +5 more
doaj   +2 more sources

Polymorphism, Halogen Bonding, and Chalcogen Bonding in the Diiodine Adducts of 1,3- and 1,4-Dithiane [PDF]

open access: yesMolecules, 2021
Through variations in reaction solvent and stoichiometry, a series of S-diiodine adducts of 1,3- and 1,4-dithiane were isolated by direct reaction of the dithianes with molecular diiodine in solution.
Andrew J. Peloquin   +4 more
doaj   +2 more sources

Chalcogen bonding in coordination chemistry

open access: yesCoordination Chemistry Reviews, 2022
The chalcogen bond (ChB) is defined as a noncovalent interaction between the electron density deficient region (so-called as sigma or pi hole) of a covalently bonded chalcogen atom and a nucleophilic (Nu) site in the same (intramolecular) or another (intermolecular) molecular entity: R-Ch center dot center dot center dot Nu [Ch = O, S, Se or Te; R = C,
A J L Pombeiro   +2 more
exaly   +3 more sources

Chalcogen Bonding in Co-Crystals: Activation through 1,4-Perfluorophenylene vs. 4,4′-Perfluorobiphenylene Cores [PDF]

open access: yesMolecules, 2021
The ability of alkylseleno/alkyltelluroacetylenes such as bis(selenomethylethynyl)-perfluorobenzene (4F-Se) to act as a ditopic chalcogen bond (ChB) donor in co-crystals with ditopic Lewis bases such as 4,4′-bipyridine is extended here to the ...
Arun Dhaka   +4 more
doaj   +2 more sources

Carbon–Halogen Bond Activation by Selenium‐Based Chalcogen Bonding [PDF]

open access: yesAngewandte Chemie - International Edition, 2017
AbstractChalcogen bonding is a little explored noncovalent interaction similar to halogen bonding. This manuscript describes the first application of selenium‐based chalcogen bond donors as Lewis acids in organic synthesis. To this end, the solvolysis of benzhydryl bromide served as a halide abstraction benchmark reaction.
Daniel B Werz, Stefan M Huber
exaly   +3 more sources

Chalcogen Bonding due to the Exo-Substitution of Icosahedral Dicarbaborane [PDF]

open access: yesMolecules, 2019
Chalcogen atoms are a class of substituents capable of generating inner and outer derivatives of boron clusters. It is well known that chalcogenated boron clusters can form strong σ-hole interactions when a chalcogen atom is a part of an icosahedron.
Jindřich Fanfrlík   +2 more
doaj   +2 more sources

Selective recognition and extraction of iodide from pure water by a tripodal selenoimidazol(ium)-based chalcogen bonding receptor [PDF]

open access: yesiScience
Summary: A selenium-based tripodal chalcogen bond (ChB) donor TPI-3Se is demonstrated for the recognition and extraction of I− from 100% water medium. NMR and ITC studies with the halides reveal that the ChB donor selectively binds with the large, weakly
Abu S.M. Islam   +4 more
doaj   +2 more sources

Thermodynamics of Anion Binding by Chalcogen Bonding Receptors [PDF]

open access: yesChemistry - A European Journal, 2018
AbstractThe application of chalcogen bonding (ChB) to anion recognition is an underdeveloped area of host–guest supramolecular chemistry. The chemical instability of heavier chalcogen derivatives may in part be responsible for the lack of progress. Herein, the synthesis of a new structurally simple, tellurium‐based ChB binding motif is reported, the ...
Yuan Chong Jason Lim   +2 more
exaly   +3 more sources

From Chalcogen Bonding to S–π Interactions in Hybrid Perovskite Photovoltaics [PDF]

open access: yesAdvanced Science
The stability of hybrid organic–inorganic halide perovskite semiconductors remains a significant obstacle to their application in photovoltaics. To this end, the use of low‐dimensional (LD) perovskites, which incorporate hydrophobic organic moieties ...
Weifan Luo   +29 more
doaj   +2 more sources

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