Determination and assignment of heteronuclear 119 Sn 1 H coupling constants

n J ( 119 Sn, 1 H) coupling constants were determined by 2D 13 C 1 H and 119 Sn 1 H non‐refocused COLOC (TPPI) correlation methods. As the 2D 13 C 1 H method only gives access to coupling constants directly measured from the spectra, the proposed non‐refocused COLOC technique is more general since it allows measurements in the case of satellites which are non‐observable in 13 C NMR spectra. An optimization method for the τ value in COLOC experiments is also proposed.