Hexa­kis­(N,N′-dimethyl­thio­urea-κS)nickel(II) nitrate

The title complex salt, [Ni(C(3)H(8)N(2)S)(6)](NO(3))(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 [Image: see text]) 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⋯S inter­actions and by inter­molecular N—H⋯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⋯O hydrogen bonds, forming a three-dimensional arrangement.