On the recovery of (3)J(H,H) and the reduction of molecular symmetry by simple NMR inverse detection experiments

Simple H-1, C-13 correlation spectra obtained by inverse detection techniques provide useful evidence of molecular symmetry, The emblematic case of cis- and trans-stilbenes together with that of a symnietric terthiophene are reported as examples. The effects of a reduction of symmetry on both direct and long-range correlations are reported.