Synthesis and Reactivity of Ru(II)/Chloro/Hydrido/Carbonyls with Cis Bulky Phosphines: An Unsaturated Ru(II) Monohydride
Inorganic Chemistry1999Vol. 38(23), pp. 5241–5245
Citations Over TimeTop 24% of 1999 papers
Abstract
[RuCl2(CO)2(dtbpe)], dtbpe = tBu2PCH2CH2PtBu2 is synthesized as a mixture of two isomers and is converted to [RuHCl(CO)2(dtbpe)], then [Ru(H)2(CO)2(dtbpe)]. The chloride trans to hydride in [RuHCl(CO)2(dtbpe)] can be replaced by BF4- or PF6-, and reaction with NaB(3,5-(CF3)2C6H3)4 gives authentic, five-coordinate [RuH(CO)2(dtbpe)]+, characterized structurally by X-ray diffraction, which reveals the lack of agostic interactions. [Ru(H)2(CO)2(dtbpe)] reacts under mild conditions with CO to give [Ru(CO)3(dtbpe)], with ethylene to give C2H6 and [Ru(C2H4)(CO)2(dtbpe)], and with D2 to give some [Ru(H)(D)(CO)2(dtbpe)]. These results are interpreted in terms of relatively facile dissociation of one end of dtbpe from the metal.
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