Ernst Billig

Synthesis and characterization of Rh3(μ-PPh2)3(CO)3(PPh3)2: a novel triangular rhodium cluster

Abstract Thermal decomposition of RhH(CO)(PPh3)3 (Ph = phenyl) in nonane at 120°C yielded a green solid in high yield. The complex was established as Rh3(μ-PPh2)3(CO)3(PPh3)2, (I), X-ray crystallography. I was found to be coordinately unsaturated in the solid state and in solution.

Phosphorus-bridged rhodium clusters : II. Synthesis and characterization of Rh4(μ-PPh2)4(CO)5(PPh3)

Abstract Decomposition of RhH(CO)(PPh 3 ) 3 (Ph = phenyl) in nonane at 120°C under CO/H 2 yielded a dark brown compound. The compound was established at Rh 4 (μ-PPh 2 ) 4 (CO) 5 (PPh 3 ) by X-ray crystallography, the structure bears certain similarities to that of Rh 3 (μ-PPh 2 ) 3 (CO) 3 (PPh 3 ) 2 .