Interconversion between square-planar palladium(ii) and octahedral palladium(iv) centres in a sulfur-bridged trinuclear structure

摘要

Treatment of fac-[Rh(apt)(3)] (apt = 3-aminopropanethiolate) with Pd2+ gives an S-bridged trinuclear complex, [Pd{Rh(apt)(3)}(2)](4+) ([1](4+)), which is interconvertible with [Pd{Rh(apt)(3)}(2)](2+) ([2](2+)). This interconversion is accompanied by a drastic change between the Pd-IV centre with an S-6 octahedral geometry in [1](4+) and the Pd-II centre with an S-4 square-planar geometry in [2](2+).