P. Hrnciar et al., COMPLEXATION OF PHTHALIDES AND SUBSTITUTED 3-BENZYLIDENE PHTHALIDES WITH CR(CO)(6), Journal of organometallic chemistry, 464(1), 1994, pp. 65-69
The acid-catalysed complexation of various substituted phthalides with
Cr(CO)(6) has been studied. Complexation of substituted 3-benzylidene
phthalides takes place at the phenyl ring in most cases, but with di-
halogeno-substituted 5-benzylidene phthalides the complexation took pl
ace at the phthalide moiety. An explanation of this difference is base
d on molecular modelling and quantum chemical calculations.