The structure of the title compound, [Ni(C10H8N2)(3)](S2O3). 7H(2)O, consis
ts of monomeric Ni(bipy)(3)(2+) cations embedded in an anionic network made
up of S2O32- ions and hydration water molecules. The structure presents th
e unusual feature of two neighbouring thiosulfates approaching linearly hea
d-to-head with an unusually short S ... S contact distance of 3.25 Angstrom
.