Abstract
CF3SiMe3 (Ruppert's reagent) has been investigated by gas phase electron diffraction, microwave spectroscopy and quantum chemical methods, deriving structural parameters and the barrier height for the methyl torsion. The bond length of the Si-CF3 bond, 1.941(3) A, is the longest Si-C bond observed so far in the gas phase. The V3 barrier for the methyl group torsion (V3= 5.71 kJ/mol) is only slightly lower than barriers determined for other trimethylsilane compounds.
Published Version
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