Abstract
The title complex salt, [Ni(C3H8N2S)(6)](NO3) (2), consists of an [Ni(Dmtu)(6)](2+) (Dmtu is N,N'-dimethylthiourea) dication and two nitrate counter-anions. The Ni-II atom (site symmetry (3) over bar) is coordinated by the S atoms of six Dmtu ligands within a slightly distorted octahedral environment. The crystal structure is characterized by weak intramolecular N-H center dot center dot center dot S interactions and by intermolecular N-H center dot center dot center dot O hydrogen bonds involving the nitrate anion (site symmetry 3.). These intermolecular interactions lead to the formation of two-dimensional networks lying parallel to the ab plane. The networks are linked via non-classical intermolecular C-H center dot center dot center dot O hydrogen bonds, forming a three-dimensional arrangement.