摘要：

The photochemical reactions of [Ru 3(CO) 12] with the diphosphorus ligands Me 2PCH 2PME 2, Ph 2PCH 2PPh 2 and Ph 2PN(Et)PPh 2 have been found to give tri-, di- or mono-nuclear products, depending on the reaction conditions and the ligand involved. Products isolated include [Ru 3(CO) 10[μ-R 2PYPR 2] (Y = CH 2, R = Me or Ph; Y = N(Et), R = Ph), [Ru 3(CO) 8[μ-R 2PYPR 2] 2] (Y = CH 2, R = Me or Ph), [Ru 3(CO) 6[μ-R 2PYPR 2] 3] (Y = CH 2, R = Me or Ph), [Ru 2(μ-CO)(CO) 4[μ-Ph 2PCH 2PPh 2] 2] and [Ru(CO) 3[Ph 2PN(Et)PPh 2]. An X-ray crystallographic study has revealed that the diphosphazane ligand in [Ru 3(CO) 10[η-Ph 2PN(Et)PPh 2] is coordinated equatorially and that the Ru-Ru edge which it bridges is ca. 0.06 Å shorter than the average of the other two edges.

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