Crystal structure of bis{S-octyl-3-[(thiophen-2-yl)methylidene]dithiocarbazato-κ² N ³,S}nickel(II)

Abstract

In the title complex, [Ni(C14H21N2S3)2], the nickel(II) atom is located on a crystallographic inversion center and exhibits a square-planar coordination environment, being coordinated by two negatively charged N,S-chelating ligands in a trans configuration. In the crystal, the non-H atoms of the complex are practically coplanar (r.m.s. deviation of fitted atoms = 0.135 Å), and the angle between the thienyl and the chelating rings is 6.7 (1)°. The molecules stack at a distance of 3.623 (2) Å along the b-axis direction.

Bis[S-octyl 3-(2-methylpropylidene)dithiocarbazato-κ2 N 3,S]nickel(II)

“…A number of Ni II complexes with ligands bearing n-octyl or n-hexyl alkyl chains have been structurally characterized and a comparison of relevant bond lengths and angles is compiled in Table 1. The corresponding values reported above are consistent with those measured in bis-chelated Ni II complexes built with similar ligands bearing a methoxybenzylidene (Begum et al, 2018) or thiophenmethylidene (Khan et al, 2023a) ligand. On the contrary, in the phenylethylidene complex (Khan et al, 2023b) the two independent Ni-N bond lengths are 0.02 A ˚longer with respect to those calculated in the present work, while the Ni-S ones are shorter by ca 0.02 A ˚.…”