title: Diethyl 2,5-bis-[(1E)-(1H-pyrrol-2-yl-methyl-idene)amino]-thio-phene-3,4-dicarboxyl-ate.
abstract: In the crystal structure of the title compound, C(20)H(20)N(4)O(4)S, the azomethine group adopt E conformations. The pyrrole units are twisted by 10.31 (4) and 18.90 (5)° with respect to the central thio-phene ring. The three-dimensional network is close packed and involves N-H⋯O, N-H⋯N, C-H⋯N and C-H⋯O hydrogen bonding.
authors: Department of Chemistry, University of Montreal, CP 6128, succ. Centre-ville, Montréal, Québec,  Canada  H3C 3J7.
authors: Stéphane
authors: S
authors: Dufresne
authors: W G
authors: WG
authors: Skene