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(1Z,3Z)-1,4-diphenyl-1,4-bis(p-tolylmethylthio)-1,3-butadiene. 1995

F Freeman, and H Lu, and J W Ziller, and E Rodriguez
Department of Chemistry, University of California, Irvine 92717, USA.

The crystal structure of (1Z,3Z)-1,4-diphenyl-1,4-bis-(p-tolylmethylthio)-1,3-b utadiene (1), C32H30S2, is described. Compound (1) has an s-trans conformation. The single bond length, C(2)--C(2'), in compound (1) of 1.432 (5) A is shorter than the C(3)--C(4) single bond (1.48 A) in 1,3-butadiene and the double-bond length, C(1)--C(2), of 1.350 (3) A in compound (1) is comparable to that in 1,3-butadiene (1.34 A). The short C--C single and double bonds in (1) may be attributed to delocalization (resonance) over the planar four-atom unit, hybridization changes, the presence of the S atoms, and/or other factors.

UI MeSH Term Description Entries
D008958 Models, Molecular Models used experimentally or theoretically to study molecular shape, electronic properties, or interactions; includes analogous molecules, computer-generated graphics, and mechanical structures. Molecular Models,Model, Molecular,Molecular Model
D002070 Butadienes Four carbon unsaturated hydrocarbons containing two double bonds. Butadiene Derivative,Butadiene Derivatives,Derivative, Butadiene,Derivatives, Butadiene
D018360 Crystallography, X-Ray The study of crystal structure using X-RAY DIFFRACTION techniques. (McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed) X-Ray Crystallography,Crystallography, X Ray,Crystallography, Xray,X Ray Crystallography,Xray Crystallography,Crystallographies, X Ray,X Ray Crystallographies

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