Synthesis and structure of catena -poly[[[aquazinc(II)]-μ-2-({[amino-(sulfanid-yl)methyl-idene]amino}-imino)-2-phenyl-acetato-κ4 O , N , S : O '] monohydrate].

Abstract

In the polymeric title compound, {[Zn(C9H7N3O2S)(H2O)]·H2O} n , the dianion of phenyl-glyoxylic acid thio-semicarbazone (benzketozone) chelates one ZnII cation through carboxyl-ate O, azomethine N and thiol-ate S atoms and bridges to the next ZnII ion through its second carboxyl-ate O atom. Each ZnII ion is five-coordinate, with the aqua ligand completing the coordination sphere, which has a shape inter-mediate between square-pyramidal and trigonal-bipyramidal. The coordination motif generates a chain extending parallel to [010], with an adjacent Zn⋯Zn separation of 4.8378 (4) Å. O-H⋯O, O-H⋯S and N-H⋯N hydrogen bonds connect the polymeric chains and non-coordinating water mol-ecules into a three-periodic network; a weak N-H⋯π contact is also present. Hirshfeld surface analysis identifies H⋯H (34.8%), C⋯H/H⋯C (16.1%), H⋯S/S⋯H (13.2%), O⋯H/H⋯O (11.0%) and N⋯H/H⋯N (8.4%) as the principal contact contributions.

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