Notes. Carbon-13 and phosphorus-31 nuclear magnetic resonance studies of the fluxional behaviour of the complexes [Fe3(CO)10{P(OMe)3}2] and [Fe3(CO)10{P(OMe)3}{P(OPh)3}]

Abstract

Variable-temperature ³¹P and ¹³C n.m.r. studies on the fluxional behaviour of the disubstituted derivatives [Fe₃(CO)₁₀{P(OMe)₃}₂] and [Fe₃(CO)₁₀{P(OMe)₃}{P(OPh)₃}] have uncovered the existence of several 1,2 isomers. Evidence is presented to suggest that phosphite ligand mobility plays a role in the isomerization processes at higher temperatures.