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Mechanisms of nucleophilic attack at coordinated carbon monoxide

1983; Elsevier BV; Volume: 246; Issue: 1 Linguagem: Inglês

10.1016/s0022-328x(00)98663-7

1872-8561

Jennifer G. Atton, Leon A. P. Kane‐Maguire,

Magnetism in coordination complexes

Kinetic studies of aqueous OH − attack on [Fe(CO) 3 (1–5-η-C 6 H 7 )] + (IIa) (to yield [Fe(CO) 3 (1–4-η-HOC 6 H 7 )] (IIIa) as final product) suggest the involvement of the carboxylic acids species [Fe(1–5-η-C 6 H 7 )(CO) 2 (COOH)] (Ia). This complex can be readily isolated as an air-sensitive pale yellow solid admixed with IIIa. Solutions of Ia in n-hexane are stable for at least 1 h at room temperature, but in CH 3 NO 2 conversion of Ia to IIIa occurs within 10 min. The related carboxylic acid derivative [Fe(1–5-η-C 7 H 9 )(CO) 2 (COOH)] has been similarly prepared and characterised from the reaction of [Fe(1–5-η-C 7 H 9 )(CO) 3 ] + with aqueous KOH.