An unexpected mononuclear nickel thiolate, bis(perthioacetato-S,S')nickel(I
I), [Ni(C2H3S3)(2)], has been obtained by the reaction of Ni-II ions with t
hiolacetic acid. It consists of a planar rectangular NiS4 unit. Weak hydrog
en bonds of the type C-H . . . Ni form molecular ribbons along the a axis.
Among the products, gamma -sulfur is also detected.