Iy. Bagryanskaya et al., Z,Z ISOMERS OF POLYFLUORINATED 1,3-BIS(ARYL)-1,3-DIAZA-2-THIAALLENES,(ARN=)(2)S, IN THE CRYSTAL AND IN SOLUTION, Mendeleev communications, (5), 1994, pp. 167-169
It has been shown by X-ray structure analysis, F-19 NMR spectroscopy a
nd PM3 calculations that non-typical (it is assumed) Z,Z isomers of (A
rN=)2S, discovered only recently in the form of sterically hindered de
rivatives, are unexpectedly widespread being found for the title compo
unds as well.