Abstract
The title complex, [Hg(C6H5)(C7H7S)], was synthesized from benzyl 4-methylpiperidine-1-carbodithioate. In the complex, the HgIIcation binds to a C atom of a phenyl ring and the S atom of a benzylthiolate ligand in a linear coordination geometry. The molecule is bent at the methylene C atom and the S atom, resulting in asynconformation with respect to the benzyl and phenyl rings. The dihedral angle between the phenyl and benzyl rings is 64.6 (2)°. The crystal structure is stabilized by intermolecular Hg...S [3.290 (3) Å] contacts and C—H...π interactions, generating a three-dimensional network.
Highlights
The title complex, [Hg(C6H5)(C7H7S)], was synthesized from benzyl 4-methylpiperidine-1-carbodithioate
The HgII cation binds to a C atom of a phenyl ring and the S atom of a benzylthiolate ligand in a linear coordination geometry
The molecule is bent at the methylene C atom and the S atom, resulting in a syn conformation with respect to the benzyl and phenyl rings
Summary
Organomercury(II) cations have a high affinity for bonding through the sulfur donor sites present in amino acids, peptides and proteins (Clarkson & Magos, 2006; Hoffmeyer et al, 2006; Rooney, 2007). Crystal structures of several phenylmercury(II) complexes with Hg—S bonds and strong intermolecular HgÁ Á ÁS interactions have been reported (Yadav et al, 2014; Bharti et al, 2013; Nath et al, 2016). 4-Methyl-piperidinecarbodithioate forms a linear mercury(II) complex in which the dithiosulfur atom coordinates to the mercury(II) ion (Nath et al, 2016; Dar et al, 2015) while in the present work the benzyl ester undergoes cleavage and a sulfur atom from the benzyl mercapto moiety of the ligand coordinates to the mercury(II) cation (Fig. 1). In this work we report the synthesis (Fig. 1), spectroscopic data and crystal structure of the title complex. The HgII cation is bound to the phenyl ipso-carbon and the thiolato sulfur atom of a benzenemethanethiolato ligand. This is generated in situ during the preparation.
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