N-(4-Methyl­piperazin-4-ium-1-yl)dithio­carbamate sesquihydrate

In the crystal structure of the title compound, C6H13N3S2·1.5H2O, weak N—H⋯S inter­actions between the zwitterionic mol­ecules are observed, leading to an extensively folded layered arrangement parallel to (100). There are three crystallographically independent water mol­ecules in the asymmetric unit, which are disordered and only half occupied

Redetermination of bis­(O,O′-diethyl dithio­phosphato-κ2 S,S′)nickel(II)

The centrosymmetric title complex, [Ni{S2P(OC2H5)2}2], has been redetermined using area-detector data. The central Ni(S2P)2 core is essentially planar and confirms the early results of McConnell & Kastalsky [Acta Cryst. (1967), 22, 853–859] based on multiple film technique data. In the title structure, the standard uncertainty values are approximately seven times lower and all H-atom positions are calculated. A pair of short symmetry-related H⋯H contacts with distances of 2.33 Å is observed in the crystal structure