Bis[N,N-dimethyl-1-(10H-pyrido[3,2-b][1,4]benzothiazin-10-yl)propan-2-aminium] tetrakis(thiocyanato-κN)cobaltate(II)

Abstract

The asymmetric unit of the title salt, (C16H20N3S)2[Co(NCS)4], comprises one monovalent isothiopendylium cation and one-half of a divalent thiocyanatocobaltate(II) anion (2 symmetry). The central thiazine ring of the cation is slightly twisted in a boat-like fashion, with r.m.s. deviations from the mean plane of 0.272 (1) and 0.2852 (8) Å for the N and S atoms. The molecular structure of the cation is stabilized by an intramolecular N—H...N hydrogen bond. Within the complex anion, the CoII atom is tetrahedrally surrounded by four N atoms of the thiocyanate ligands. π–π stacking, with a distance of 3.7615 (10) Å between the centroids of benzene and pyridine rings, helps to consolidate the packing.