Structures of diethynyl sulfide and bis (phenylethynyl) sulfide

The structure of S(C triplebond CH)(sub 2) was investigated by high-resolution spectroscopy, the results of which is discussed together with the high level ab initio calculations of S(C triplebond CH)(sub 2). The study revealed that the S singlebond C triplebond linkages were nonlinear in both the title compounds as if the carbons distant from the sulfur were repelling each other.