Photochemical synthesis, reactivity, and electrochemical properties of [CpFeP 2L] + cations; (Cp = C 5H 5, C 5Me 5; L = Co vs. CH 3CN; P = phosphine or phosphite)

Abstract

Photolytic replacement of the arene ligand in the cations [Cp ★Fe( p-xylene)] + (Cp ★ = C 5Me 5) by P(OMe) 3 ligands is only possible when a sensitizer (acetone or anthracene) is present and leads to Cp ★Fe +{P(OMe 3)} 3. Photoextrusion of one phosphite ligand from [C 5R 5Fe{P(OMe) 3} 3] + (R = H, Me) or of the carbonyl from [C 5R 5Fe(P ⌢ P)(CO)] + (R = H, Me; P ⌢ P = dppm, dppe) in CH 3CN leads to CH 3CN complexes which are reversibly oxidized.