-DIPHENYL-1,4-BIS(P-TOLYLMETHYLTHIO)-1,3-BUTADIENE

The crystal structure of diphenyl-1,4-bis-(p-tolylmethylthio)-1,3-buta diene (1), C32H30S2, is described. Compound (1) has an s-trans conform ation. The single bond length, C(2)-C(2'), in compound (1) of 1.432 (5 ) Angstrom is shorter than the C(3)-C(4) single bond (1.48 Angstrom) i n 1,3-butadiene and the double-bond length, C(1)-C(2), of 1.350 (3) An gstrom in compound (1) is comparable to that in 1,3-butadiene (1.34 An gstrom). The short C-C single and double bonds in (1) may be attribute d to delocalization (resonance) over the planar four-atom unit, hybrid ization changes, the presence of the S atoms, and/or other factors.