title: Crystal structure of N,N'-[(thio-phene-2,5-di-yl)bis-(methanylyl-idene)]di-p-toluidine.
abstract: The title compound, C20H18N2S, was synthesized by the condensation reaction between p-tolu-idine and thio-phene-2,5-dicarboxaldehye in refluxing toluene with p-toluene-sulfonic acid added as catalyst. The mol-ecule lies on a twofold rotation axis and adopts an E orientation with respect to the azomethine bonds. The dihedral angle between the unqiue benzene ring and the least-squares plane [maximum deviation = 0.0145 (14) Å] containing the azomethine and thio-phene groups is 32.31 (6)°.
authors.affiliation: Department of Chemistry & Biochemistry, Central Connecticut State University, New Britain, CT 06053, USA.
authors.forename: Raina
authors.initials: R
authors.lastname: Boyle
authors.affiliation: Department of Chemistry & Biochemistry, Central Connecticut State University, New Britain, CT 06053, USA.
authors.forename: Guy
authors.initials: G
authors.lastname: Crundwell
authors.affiliation: Department of Chemistry & Biochemistry, Central Connecticut State University, New Britain, CT 06053, USA.
authors.forename: Neil M
authors.initials: NM
authors.lastname: Glagovich
keywords: crystal structure; symmetrical diazo­methine