13C{1H, selective 119Sn} NMR experiment as a tool for determination and assignment of nJ(119Sn, 13C) coupling constants

Abstract

13C {1H, selective 119Sn} NMR experiment is an effective one-dimensional technique for determination and assignment of nJ (119Sn, 13C) coupling constants in organotin compounds containing two or more tin atoms in a molecule. Signals of 119Sn satellites are decoupled and, thus, "removed" from the 13CNMR spectra. For one-bond tin-carbon coupling constants, only 1J(117Sn, 13C) coupling constants are visible while for much smaller long-range tin-carbon coupling constants, for which 119Sn and 117Sn satellites are not separated, relative integral intensities are reduced approximately to a half with respect to those carbons for which selective 119Sn decoupling is not effective.