Quantitative photochemistry of ({eta}{sup 5}-C{sub 5}H{sub 5})Fe(CO){sub 2}I in solution: Effective heterolytic Fe-I dissociation upon long-wavelength excitation
- State Univ. of New York, Binghamton, NY (United States). Dept. of Chemistry
The quantitative photochemistry of ({eta}{sup 5}-C{sub 5}H{sub 5})Fe(CO){sub 2}I in room-temperature solution involving the heterolytic cleavage of iodide to form ({eta}{sup 5}-C{sub 5}H{sub 5})Fe(CO){sub 2}({eta}{sup 1}-N-pyrrolyl) has been investigated following irradiation at several wavelengths in the 488--647 nm region. The most effective photoconversions were found to take place with excitation at long wavelengths (580--647 nm) into weak low-lying absorption bands; the absolute quantum efficiency for the photoreaction of ({eta}{sup 5}-C{sub 5}H{sub 5})Fe(CO){sub 2}I in room-temperature toluene has been determined to be 0.38 ({+-} 0.02) upon Kr{sup +} laser photolysis at 647 nm. The photochemical results are in accordance with recent assignments for the HOMO orbitals in ({eta}{sup 5}-C{sub 5}H{sub 5})Fe(CO){sub 2}I and demonstrate that long-wavelength irradiation provides a valuable way of effecting heterolytic Fe-I dissociation, facilitating a synthetic pathway to azaferrocene.
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- FG02-89ER14039
- OSTI ID:
- 642387
- Journal Information:
- Inorganic Chemistry, Journal Name: Inorganic Chemistry Journal Issue: 9 Vol. 37; ISSN 0020-1669; ISSN INOCAJ
- Country of Publication:
- United States
- Language:
- English
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