A telluride capped trinuclear nickel cluster [Ni3(µ3-Te)2(µ-PPh2CH2PPh2)3]n+ with four accessible redox states (n=–1, 0, 1, 2)
Abstract
The new telluride capped trinuclear nickel cluster [Ni3(µ3-Te)2(µ-dppm)3] 1 is prepared from TePPrn3, bis(cycloocta-1,5-diene)nickel(0), and dppm[bis(diphenylphosphino)methane]; results of cyclic voltammetry studies establish that 1 has a capacity for multiple electron transfer through three reversible redox couples spanning the states 1–, 1, 1+, and 12+; cluster 1+ is characterized by X-ray crystallography.