Abstract

Reaction of SiH(Me)(CH2CH2CH2PPh2)2 (i.e. “biPSiH”) with mer-RuH(PPh3)3(CO)Cl affords the 5-coordinate Ru(II) monocarbonyl chloride Ru(biPSi)(CO)Cl (1), which adds CO to yield the 6-coordinate dicarbonyl analogue Ru(biPSi)(CO)2Cl (2). Stereoselective incorporation of 13CO to give the labeled analogue 2* shows that on subsequent heating in refluxing toluene 1 is regenerated as a mixture of syn and anti diastereomers (ca. 3:1 ratio).

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