SCHEDULED MAINTENANCE
Because of more favourable electrostatic interactions in the ion pair, SiH3–Li+, the inverted C3v geometry of silyl-lithium (2) is calculated to be 2.4 kcal/mol (MP4/SDTQ/6–31G**//6–31G*+ ZPE) more stable than the ‘tetrahedral’(C3v) isomer (3); the 13.5 kcal/mol barrier separating (2) and (3) involves movement of Li+ from one side of the SiH3– moiety to the other. (1 cal = 4.184 J.)
P. von Ragué Schleyer and T. Clark, J. Chem. Soc., Chem. Commun., 1986, 1371 DOI: 10.1039/C39860001371
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