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Science 10 October 1997:
Vol. 278. no. 5336, p. 197
DOI: 10.1126/science.278.5336.197l
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The initial steps of the activation of the strong carbon-hydrogen bonds of alkanes by metal complexes in solution have been studied spectroscopically. Bromberg et al. used the complex Tp*Rh(CO)2 [Tp*, HB(3,5-dimethylpyrazolyl)3], which has a sufficiently high photochemical yield to be studied with ultrafast spectroscopy. Intermediates along the pathway were identified, and from their lifetimes the energy barrier for their formation could be estimated. [See the cover.]

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Science. ISSN 0036-8075 (print), 1095-9203 (online)