Preparations of novel half-sandwich iron carbonyl phosphine complexes: Intramolecular link between the cyclopentadienyl and the phosphine ligand
摘要:
The novel iron half-sandwich complex (eta(5):eta(1)-C(5)H(4)CH(2)CH(2)PPh(2))Fe(CO)Cl (4), in which the ligating phosphine was connected to the cyclopentadienyl ring, was prepared by reacting the LiC(5)H(4)CH(2)CH(2)PPh(2) (2) with FeCl2 followed by CO bubbling. Reaction of 4 with sp-, sp(2)- and sp(3)-hybridized carbon nucleophiles provided formal substitution product (eta(5):eta(1)-C(5)H(4)CH(2)CH(2)PPh(2))Fe(CO)R (5). Solid state structures of the methyl complex 5a, phenylacetylide 5g and trimethylsilylacetylide 5j were characterized by single-crystal X-ray analyses.