Substrate and solvent influence on the photochemical C-H bond activation reactivity of (HBPz{prime}{sub 3})Rh(CO){sub 2} (Pz{prime} = 3,5-dimethylpyrazolyl)
- State Univ. of New York, Binghamton, NY (United States)
The photochemically-induced intermolecular C-H bond activation reaction of (HBPz{prime}{sub 3})Rh(CO){sub 2} (Pz{prime} = 3,5-dimethylpyrazolyl) has been investigated in various hydrocarbon solutions at 293 K following excitation at 366 and 458 nm. UV-visible and FTIR spectra recorded throughout photolysis illustrate that the dicarbonyl complex can be converted readily to the corresponding (HBPz{prime}{sub 3})Rh(CO)(R)H derivatives at each of the excitation wavelengths. The photochemistry proceeds without interference from secondary photoprocesses or thermal reactions and the reactivity has been measured quantitatively with the determination of absolute quantum efficiencies for intermolecular C-H bond activation ({phi}{sub CH} = 0.13-0.32) on excitation at 366 nm but is much less effective ({phi}{sub CH} = 0.0059-0.011) on photolysis at 458 nm for each of the hydrocarbon substrates.
- DOE Contract Number:
- FG02-89ER14039
- OSTI ID:
- 530809
- Journal Information:
- Inorganic Chemistry, Vol. 35, Issue 24; Other Information: PBD: 20 Nov 1996
- Country of Publication:
- United States
- Language:
- English
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