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Title: Synthesis and structure characterization of [Co(H2O)2(DMSO)2(4-nba)]4-nba (DMSO = dimethylsulfoxide; 4-nba = 4-nitrobenzoate)
Authors: Srinivasan, Bikshandarkoil R
Tari, Sonal P
Parsekar, Neha U
Narvekar, Kedar U
Keywords: Mechanochemical synthesis;4-nitrobenzoate;Dimethylsulfoxide;Crystal structure;cis-diaquabis (dimethylsulfoxide)4-nitrobenzoatocobalt(II) 4-nitrobenzoate
Issue Date: Jan-2020
Publisher: NISCAIR-CSIR, India
Abstract: Dissolution of a fine powder obtained by mechanochemical grinding of cobaltous carbonate with 4-nitrobenzoic acid (4-nbaH) in hot dimethylsulfoxide (DMSO) followed by slow evaporation of the solvent resulted in the formation of cis-diaquabis(dimethylsul-foxide)4-nitrobenzoatocobalt(II) 4-nitrobenzoate 1 in good yield. The title compound [Co(H2O)2(DMSO)2(4-nba)]4-nba 1 crystallizes in the centrosymmetric monoclinic P21/c space group. The structure of 1 consists of two crystallographically independent Co(II) ions. Each unique cobalt exhibits octahedral geometry and is bonded to a pair of terminal aqua ligands situated cis to each other and a bidentate 4-nba ligand which form the square base of the octahedron. A pair of DMSO ligands disposed trans to each other complete the hexa coordination around the central metal. The [Co(H2O)2(DMSO)2 (4-nba)]+ cations and the 4-nba anions are interlinked with the aid of several weak H-bonding interactions. A comparative study of several 4-nitrobenzoate compounds of cobalt is described.
Page(s): 51-56
ISSN: 0975-0975(Online); 0376-4710(Print)
Appears in Collections:IJC-A Vol.59A(01) [January 2020]

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