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A preliminary X-ray study of the title mol-ecular salt, [Ni(CH(4)N(2)S)(6)](NO(3))(2), has been reported twice previously, by Maďar [Acta Cryst. (1961), 14, 894] and Rodriguez, Cubero, Vega, Morente &amp; Vazquez [Acta Cryst. (1961), 14, 1101], using film methods. We confirm the previous studies, but to modern standards of precision and with all H atoms located. The central Ni atom (site symmetry ) of the dication is octa-hedrally coordinated by six S-bound thio-urea mol-ecules. The crystal structure is stabilized by intra- and inter-molecular N-H⋯S and N-H⋯O hydrogen bonds.

Hexakis(thiourea-κS)nickel(II) nitrate: a redetermination