An e.s.r. study has been made of the photolytic reactions of decacarbonyldimanganese derivatives in the presence of air or dioxygen in solution at low temperatures. E.s.r. parameters for the species [Mn(CO)4L(O2)] [L = CO, PPh3 PBun3, or P(OEt)3] are presented and oxygen-17 labelling of the species where L = CO has given isotropic coupling constants for the two atoms of the dioxygen moiety of 2.2 ± 0.1 and 2.05 ± 0.1 mT. Frozen-solution spectra of [Mn(CO)5(O2)] have been analysed and the results are discussed in terms of the bonding in the complex. Related photo-oxidation studies of other binuclear carbonyl complexes are reported and a species which is probably [Fe(?-C5H5)(CO)2(O2)] has been identified by e.s.r. spectroscopy.
|Number of pages||4|
|Journal||Journal of the Chemical Society, Dalton Transactions|
|Publication status||Published - 1979|