Abstract

The compounds [Ru 3(μ-H)(μ 3-ampy)(CO) 9] ( 1) and [Ru 3(μ-H) 2(μ 3-ampy)(CO) 9]BF 4 ( 2) (Hampy = 2-amino-6-meth (dppm) to give [Ru 3(μ-H)(μ 3-ampy)(CO) 7(dppm)] ( 3) and [Ru 3(η-H) 2(μ 3-ampy)(CO) 7(dppm)]BF 4 ( 4), respectiv ligand are cis to both the hydride and the amido-fragment of the bridging ampy ligand, whereas in complex 4 each P atom is trans to a hydri 2 affords [Ru 3(μ-H) 2(μ 3-ampy)(CO) 7(dppm)BF 4 ( 5), which is an isomer of complex 4; in fact, 5 can also be obtain tetrahydrofuran. Complex 5 undergoes deprotonation upon reaction with potassium methoxide or triethylamine, giving 3; however, the reaction of methoxycarbonyl derivative [Ru 3(μ-H) 2(μ 3amfy)(CO 2Me)(CO) 6(dppm)] ( 6), which contains the CO 2 Me group in an equatorial

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