Butyl­triphenyl­phospho­nium bis­(2-thioxo-1,3-dithiole-4,5-dithiol­ato)nickelate(III).

In the title complex, (C22H24P)[Ni(C3S5)2] or (BuPh3P)[Ni(dmit)2] (where BuPh3P is the butyl­triphenyl­phospho­nium cation and dmit is the 2-thioxo-1,3-dithiole-4,5-dithiol­ate anion), each Ni atom is tetra­coordinated by four dmit S atoms, forming a nearly square-planar arrangement. The average Ni—S bond length is 2.16Å, much smaller than 2.21Å for the Ni2+ ion in [Ni(dmit)2]2−. The other bond distances are also shorter, close to the corresponding double-bond value. The [Ni(dmit)2]− anions and butyl­triphenyl­phospho­nium counter-cations form a layered arrangement in the crystal structure. [ABSTRACT FROM AUTHOR]