B. Slootmaekers et al., A DISTINCTION BETWEEN THE S-CIS AND S-TRANS CONFORMATIONS OF PLANAR DITHIOOXAMIDES WITH INFRARED-SPECTROSCOPY, SPECT ACT A, 52(3), 1996, pp. 375-377
Careful comparison of the infrared spectra of free planar and complexe
d dithiooxamides reveals that the frequency of the in-plane delta NH2
and delta NH deformations can be used as a criterion for distinction b
etween the S-cis and S-trans conformations of these molecules.