Abstract
Abstract Mossbauer, NMR, and infrared spectroscopy have been applied to the study of a number of organometallic tin compounds containing one or more tin manganese pentacarbonyl bonds. For the (CH3)4−nSn[Mn(CO)5]n series (n=0 to 3) a linear relation between the Mössbauer isomer shift and the number of manganese pentacarbonyl ligand was consistent with the partial isomer shift theory of 119Sn. A linear relation between the Mössbauer isomer shift and the methyl proton NMR chemical shift was also observed for this series. A plot of the isomer shift (δ0) versus the number of p holes (hp) for organotin manganese pentacarbonyl compounds established a relation δ0=1.23+0.53hp for sp3 hybridized tin. From isomer shift systematics a value of (ΔR⁄R) for 119Sn was calculated to be 1.2×10−4.
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