Halogen, chalcogen, and hydrogen bonding in organoiodine cocrystals of heterocyclic thiones: imidazolidine-2-thione, 2-mercaptobenzimidazole, 2-mercapto-5-methylbenzimidazole, 2-mercaptobenzoxazole, and 2-mercaptobenzothiazole.

Autor: Watts S; Department of Chemistry, Clemson University, 219 Hunter Laboratories, Clemson, SC 29634, USA., Peloquin AJ; Department of Chemistry, Clemson University, 219 Hunter Laboratories, Clemson, SC 29634, USA., Bandara M; Department of Chemistry, Clemson University, 219 Hunter Laboratories, Clemson, SC 29634, USA., McMillen CD; Department of Chemistry, Clemson University, 219 Hunter Laboratories, Clemson, SC 29634, USA., Pennington WT; Department of Chemistry, Clemson University, 219 Hunter Laboratories, Clemson, SC 29634, USA.
Jazyk: angličtina
Zdroj: Acta crystallographica. Section C, Structural chemistry [Acta Crystallogr C Struct Chem] 2022 Dec 01; Vol. 78 (Pt 12), pp. 702-715. Date of Electronic Publication: 2022 Nov 09.
DOI: 10.1107/S2053229622009548
Abstrakt: Through the combination of heterocyclic thiones with variation in the identity of the heterocyclic elements, namely, imidazolidine-2-thione, 2-mercaptobenzimidazole, 2-mercapto-5-methylbenzimidazole, 2-mercaptobenzoxazole, and 2-mercaptobenzothiazole with the common halogen-bond donors 1,2-, 1,3-, and 1,4-diiodotetrafluorobenzene, 1,3,5-trifluorotriiodobenzene, and tetraiodoethylene, a series of 18 new crystalline structures were characterized. In most cases, N-H...S hydrogen bonding was observed, with these interactions in imidazole-containing structures typically resulting in two-dimensional motifs (i.e. ribbons). Lacking the second N-H group, the thiazole and oxazole hydrogen bonding resulted in only dimeric pairs. C-I...S and C-I...I halogen bonding, as well as C=S...I chalcogen bonding, served to consolidate the packing by linking the hydrogen-bonding ribbons or dimeric pairs.
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Databáze: MEDLINE
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