title: Crystal structure of bis-(3-bromo-pyridine-κN)bis-(O-ethyl di-thio-carbonato-κ(2) S,S')nickel(II).
abstract: In the title mol-ecular complex, [Ni(C3H5OS2)2(C5H4BrN)2], the Ni(2+) cation is located on a centre of inversion and has a distorted octa-hedral N2S4 environment defined by two chelating xanthate ligands and two monodentate pyridine ligands. The C-S bond lengths of the thio-carboxyl-ate group are indicative of a delocalized bond and the O-Csp (2) bond is considerably shorter than the O-Csp (3) bond, consistent with a significant contribution of one resonance form of the xanthate anion that features a formal C=O+ unit and a negative charge on each of the S atoms. The packing of the mol-ecules is stabilized by C-H⋯S and C-H⋯π inter-actions. In addition, π-π inter-actions between the pyridine rings [centroid-to-centroid distance = 3.797 (3) Å] are also present. In the crystal structure, mol-ecules are arranged in rows along [100], forming layers parallel to (010) and (001).
authors.affiliation: Post-Graduate Department of Physics & Electronics, University of Jammu, Jammu Tawi 180 006, India.
authors.forename: Rajni
authors.initials: R
authors.lastname: Kant
authors.affiliation: Post-Graduate Department of Physics & Electronics, University of Jammu, Jammu Tawi 180 006, India.
authors.forename: Gurvinder
authors.initials: G
authors.lastname: Kour
authors.affiliation: Post-Graduate Department of Physics & Electronics, University of Jammu, Jammu Tawi 180 006, India.
authors.forename: Sumati
authors.initials: S
authors.lastname: Anthal
authors.affiliation: Post-Graduate Department of Chemistry, University of Jammu, Jammu Tawi 180 006, India.
authors.lastname: Neerupama
authors.affiliation: Post-Graduate Department of Chemistry, University of Jammu, Jammu Tawi 180 006, India.
authors.forename: Renu
authors.initials: R
authors.lastname: Sachar
keywords: Crystal structure; crystal structure; nickel complex; xanthate ligands; π–π inter­actions