title: Iminopyrrole derivatives containing electron-withdrawing substituents: the formation of dimers and supramolecular arrangements.
abstract: The crystal structures of two p-substituted phenylformiminopyrrole derivatives, namely 2-[(4-fluorophenyl)iminomethyl]pyrrole, C(11)H(9)FN(2), (1), and 2-[(1H-pyrrol-2-ylmethylidene)amino]benzonitrile, C(12)H(9)N(3), (2), bear F and C[triple-bond]N electron-withdrawing groups, respectively. Both structures feature two independent molecules in the asymmetric unit forming dimers via N-H...N hydrogen bonds. In the case of (1), each dimer interacts with two other dimers via C-H...F contacts, thus forming one-dimensional chains in the b direction, whereas in the case of (2), a weak C-H...N interaction connects the dimers in one-dimensional chains in the (110) direction.
authors.affiliation: Centro de Química Estrutural, Departamento de Engenharia Química e Biológica, Instituto Superior Técnico, Universidade Técnica de Lisboa, Lisboa, Portugal.
authors.forename: Clara S B
authors.initials: CS
authors.lastname: Gomes
authors.forename: Cláudia A
authors.initials: CA
authors.lastname: Figueira
authors.forename: Patrícia S
authors.initials: PS
authors.lastname: Lopes
authors.forename: D
authors.initials: D
authors.lastname: Suresh
authors.forename: Pedro T
authors.initials: PT
authors.lastname: Gomes
authors.forename: M Teresa
authors.initials: MT
authors.lastname: Duarte
mesh_terms: D018360:Crystallography, X-Ray; D004583:Electrons; D006860:Hydrogen Bonding; D007097:Imines / Q000737:chemistry*; D015394:Molecular Structure; D009570:Nitriles / Q000737:chemistry*; D011758:Pyrroles / Q000737:chemistry*
chemical_list: C561517:2-((1H-pyrrol-2-ylmethylidene)amino)benzonitrile; D007097:Imines; D009570:Nitriles; D011758:Pyrroles