Volumes of activation for kinetically labile organometallic complexes: solvent displacement from cis-[(C6H5Cl)(PPh2R)W(CO)4][R = Ph, (CH2)4CH
CH2] in chlorobenzene solution
Abstract
Large, positive, and similar volumes of activation, indicative of dissociative desolvation mechanisms, have been observed for chlorobenzene displacement by pyridien and through chelate ring closure, respectively, from cis-[(C6H5Cl)(PPh2R)W(CO)4] complexes [R = Ph, (CH2)4CCH2] produced via pulsed laser flash photolysis.