Characterization of metal-to-ligand charge-transfer and intraligand transitions of fac-[Re(CO)3L(X)] complexes [L = di-imine; X = halide or Mn(CO)5] and explanation of the photochemistry of [Re(CO)3L{Mn(CO)5}] using the resonance Raman effect
- 1 January 1981
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in J. Chem. Soc., Dalton Trans.
- No. 5,p. 1124-1133
- https://doi.org/10.1039/dt9810001124
Abstract
The resonance Raman (r.R.) spectra of a series of [Re(CO)3L(X)] complexes [L = aryl or alkyl NN′-disubstituted-ethane-1,2-di-imine or 2-(N-monosubstituted-iminomethyl) pyridine; X = Cl or Br], obtained by excitation within the lowest-energy absorption band are reported. The influence of the ligand L and of the halogen atom X is discussed. The excitation profiles of [Re(CO)3(p-MeC6H4NCHCHNC6H4Me-p)Cl] are compared with those of the free ligand, NN′-di(p-tolyl)ethane-1,2-di-imine. These spectra revealed that upon excitation within both metal-to-ligand charge-transfer and intraligand transitions also resonance enhancement occurs of a carbonyl stretching mode. The low-temperature r.R. spectra of [Re(CO)3(NC5H4CHNC6H4Me-p){Mn(CO)5}] are reported and used for the characterization of the electronic absorption spectrum and for the explanation of the photochemistry of this complex.Keywords
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