A kinetic investigation of arene exchange and substitution in (naphthalene)Cr(CO)3

Abstract The rate of (naphthalene)Cr(CO) 3 with toluene in n-nonane to give (toluene)Cr(CO) 3 is independent of the toluene concentration, whereas the rate of substitution by P(OMe) 3 to give fac -Cr(CO) 3 [P(OMe) 3 ] 3 is first order with respect to the concentration of P(OMe) 3 . For a series of aromatic and heteroaromatic complexes of tricarbonylchromium, the order of substitutional lability is not necessarily mirrored in lability towards exchange.