Abstract
Reaction of NaLOEt (LOEt = (η5-C5H5)Co{P(O)(OEt)2}3) with Ru(PPh3)3Cl2, Ru(DMSO)4Cl2 (DMSO = dimethyl sulfoxide), and Ru(PPh3)2(CO)Cl(CHCHPh) afforded LOEtRu(PPh3)2Cl (1), LOEtRu(DMSO)2Cl (2), and LOEtRu(PPh3)(CO)(CHCHPh) (3), respectively. The structures of complexes 1 and 2 have been established by X-ray crystallography. The mean Ru−O, Ru−P, and Ru−Cl bond distances in 1 are 2.183, 2.267, and 2.393(3) A, respectively. The mean Ru−O, Ru−S, and Ru−Cl distances in 2 are 2.118, 2.188, and 2.362(2) A, respectively. Treatment of 3 with HBF4 yielded the olefin complex [LOEtRu(PPh3)(CO)(η2-PhCHCH2)]BF4 (4). Reaction of complex 1 with PhC⋮CH in the presence of NH4PF6 gave the vinylidene complex [LOEtRu(PPh3)2(CCHPh)](PF6) (6). The mean Ru−O, Ru−P, and Ru−C distances in 6 are 2.127, 2.344, and 1.80(2) A, respectively. Deprotonation of 6 with NaOH gave the acetylide complex LOEtRu(PPh3)2(C⋮CPh) (7). Reaction of complex 1 with 3-butyn-1-ol in the presence of NH4PF6 afforded the cyclic carbene The mean Ru−O, Ru−P, a...
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