Charge-transfer processes in (4-nitrobenzoate)Re(CO){sub 3}(azine){sub 2}complexes. Competitive reductions of 4-nitrobenzoate and azine in thermally and photochemically induced redox processes
- Univ. of Notre Dame, IN (United States). Radiation Lab.
The photochemically and thermally induced redox reactions of the (4-nitrobenzoate)Re(CO){sub 3} (azine) (azine = 1,10-phenanthroline, 2,2{prime}-bipyridine, and (4-phenylpyridine){sub 2}) were investigated by flash photolysis and pulse radiolysis. Processes characterized as intramolecular charge transfers from coordinated azine radicals to the 4-nitrobenzoate ligand and vice versa were observed in a 1--100 {micro}s time scale by pulse radiolysis. In photochemical experiments, the conversion among metal to ligand charge-transfer excited states, i.e., from the Re to azine to the Re to 4-nitrobenzoate charge-transfer excited state, involves intermediates with lives of picoseconds. A mechanism for the conversions that incorporates intraligand excited states is discussed.
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- OSTI ID:
- 642397
- Journal Information:
- Inorganic Chemistry, Journal Name: Inorganic Chemistry Journal Issue: 11 Vol. 37; ISSN 0020-1669; ISSN INOCAJ
- Country of Publication:
- United States
- Language:
- English
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