Crystal structure of aqua- trans-bis-(dimethyl sulfoxide-κ O)(pyridine-2,6-di-carboxyl-ato-κ3O2, N, O6)nickel(II)

Chen Liu; Ashley C Felts; Daisuke Takahashi; Wesley S Kinden; Khalil A Abboud

doi:10.1107/S2056989017006090

Crystal structure of aqua- trans-bis-(dimethyl sulfoxide-κ O)(pyridine-2,6-di-carboxyl-ato-κ³O², N, O⁶)nickel(II)

Acta Crystallogr E Crystallogr Commun. 2017 Apr 28;73(Pt 5):777-779. doi: 10.1107/S2056989017006090. eCollection 2017 May 1.

Authors

Chen Liu¹, Ashley C Felts², Daisuke Takahashi², Wesley S Kinden¹, Khalil A Abboud²

Affiliations

¹ Department of Chemistry and Environmental Science, Grenfell Campus, Memorial University of Newfoundland, Corner Brook, NL, A2H 5G4, Canada.
² Department of Chemistry, University of Florida, Gainesville, FL, 32611-7200, USA.

Abstract

In the title complex, [Ni(C₇H₃NO₄)(C₂H₆OS)₂(H₂O)], the Ni^II cation is situated on a twofold rotation axis and exhibits a distorted octa-hedral NO₅ coordination environment defined by a tridentate pyridine-2,6-di-carb-oxy-lic acid dianion (dpa^2-), two dimethyl sulfoxide (DMSO) mol-ecules, and a water mol-ecule. In the crystal, the complex mol-ecules are linked by O-H⋯O and C-H⋯O hydrogen bonds into a three-dimensional network whereby DMSO mol-ecules from neighboring complexes overlap to form layers parallel to (001), alternating with layers of Ni^II-dpa^2- moieties. The title complex is isotypic with its cobalt(II) analogue.

Keywords: crystal structure; dimethyl sulfoxide; hydrogen bonding; nickel(II); pyridine-2,6-dicarboxylic acid dianion.