| Abstract
| - The reactions between CrO2Cl2 and a series of substituted phosphines have been investigated using matrixisolation infrared spectroscopy. For all of the phosphines except PF3, twin jet co-deposition of the two reagentsinto argon matrices at 14 K initially led to the formation of weak bands due to the corresponding phosphineoxide. For all of the phosphines, subsequent irradiation with light of λ > 300 nm led to the growth of anumber of intense new bands that have been assigned to the phosphine oxide complexed to CrCl2O, followingan oxygen atom transfer reaction. Gas-phase, merged jet reactions prior to matrix deposition led to a significantyield of the uncomplexed phosphine oxide. Theoretical calculations at the B3LYP/6-311++g(d,2p) levelwere carried out in support of the experimental work, to support product band assignments and clarify thenature of the molecular complexes.
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