Substituent-dependent exchange mechanisms in highly fluxional RSn9(3-) anions

Chem Commun (Camb). 2009 Jul 28:(28):4197-9. doi: 10.1039/b905239a. Epub 2009 Jun 12.

Abstract

119Sn NMR studies show that the RSn9(3-) ions (R=i-Pr, Sn(C6H11)3) are highly fluxional in solution, where the exchange mechanisms involve rapid migration of the R group in the latter but not in the former.