Synthesis and structure of an arylselenenium(II) cation, [C34H41N4Se+]2[Hg(SeCN)4]2−, based on a 5-tert-butyl-1,3-bis(1-pentyl-1H-benzimidazol-2-yl)benzene scaffold
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Published:2018-05-15
Issue:6
Volume:74
Page:786-790
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ISSN:2056-9890
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Container-title:Acta Crystallographica Section E Crystallographic Communications
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language:
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Short-container-title:Acta Cryst E
Author:
Rani Varsha,
Singh Harkesh B.,
Butcher Ray J.ORCID
Abstract
In the title salt, bis{[5-tert-butyl-1,3-bis(1-pentyl-1H-benzimidazol-2-yl)benzene]selenium} tetrakis(selenocyanato)mercury, (C34H41N4Se)2[Hg(SeCN)4], the arylselenenium cations, [C34H41N4Se]+, are linked through [Hg(SeCN)4]2−anions by C—H...N hydrogen bonds. In the cation, the geometry around the Se atom in the 5-tert-butyl-1,3-bis(1-pentyl-1H-benzimidazol-2-yl)benzene scaffold is T-shaped, resulting from the coordination of Se by the C atom of the central aromatic ring and the N atoms of both of the benzimidazole moieties. ThetransSe—N bond lengths are almost equal [2.087 (3) and 2.099 (3) Å] and the Se—C bond length is 1.886 (3) Å. The N—Se—N angle is 159.29 (11)°. The geometry around the HgIIatom in the [Hg(SeCN)4]2−anion is distorted tetrahedral, with Se—Hg—Se angles ranging from 88.78 (3) to 126.64 (2)°. In [Hg(SeCN)4]2−, the Hg—Se bonds are unsymmetrical [2.5972 (4) and 2.7242 (5) Å]. One of the pentyl substituents is disordered over two equivalent conformations, with occupancies of 0.852 (8) and 0.148 (8).
Funder
National Science Foundation
Department of Science and Technology, Ministry of Science and Technology
Council of Scientific and Industrial Research
Publisher
International Union of Crystallography (IUCr)
Subject
Condensed Matter Physics,General Materials Science,General Chemistry
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