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The structure of the phosphinyl radical, ṖR2 [R = CH(SiMe3)2], has been determined by gas-phase electron diffraction (GED) together with ab initio molecular orbital calculations, and that of the corresponding diphosphine, (PR2)2, has been established by X-ray crystallography; the diphosphine behaves as an energy storage reservoir.
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Hinchley et al. (2000) studied this question.
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