title: Crystal structure of diethyl 2,2'-[((1E,1'E)-{[(1R,4R)-cyclo-hexane-1,4-di-yl]bis-(aza-nylyl-idene)}bis-(methanylyl-idene))bis-(1H-pyrrole-2,1-di-yl)]di-acetate.
abstract: The whole mol-ecule of the title compound, C24H32N4O4, is generated by inversion symmetry. The cyclo-hexane ring adopts a chair conformation and the conformation about the C=N bonds is E. The pyrrole rings have an anti confirmation with respect to the cyclo-hexane moiety and the ethyl acetate groups have extended conformations. In the crystal, mol-ecules are linked by pairs of C-H⋯O hydrogen bonds forming chains, enclosing R 2 (2)(10) ring motifs with inversion symmetry, propagating parallel to the (101) plane.
authors.affiliation: Department of Chemistry, College of Education for Pure Science, University of Basrah, Iraq.
authors.forename: Jasim
authors.initials: J
authors.lastname: Alshawi
authors.affiliation: Department of Chemistry, College of Education for Pure Science, University of Basrah, Iraq.
authors.forename: Muoayed
authors.initials: M
authors.lastname: Yousif
authors.affiliation: School of Chemistry, University of Manchester, Oxford Road, Manchester M13 9PL, England.
authors.forename: Karzan H
authors.initials: KH
authors.lastname: Zangana
authors.affiliation: School of Chemistry, University of Manchester, Oxford Road, Manchester M13 9PL, England.
authors.forename: Inigo J
authors.initials: IJ
authors.lastname: Vitorica Yrezabal
authors.affiliation: School of Chemistry, University of Manchester, Oxford Road, Manchester M13 9PL, England.
authors.forename: Richard
authors.initials: R
authors.lastname: Winpenny
authors.affiliation: Department of Chemistry, College of Education (Ibn Al-Haitham) for Pure Science, University of Baghdad, Iraq.
authors.forename: Mohamad J
authors.initials: MJ
authors.lastname: Al-Jeboori
keywords: C—H⋯O hydrogen bonding; Schiff base; bis­pyrrole; crystal structure
references.citation: Acta Crystallogr A. 2008 Jan;64(Pt 1):112-22
references.pmid: 18156677
references.citation: Acta Crystallogr D Biol Crystallogr. 2009 Feb;65(Pt 2):148-55
references.pmid: 19171970
references.citation: Acta Crystallogr Sect E Struct Rep Online. 2010 Feb 24;66(Pt 3):m332-3
references.pmid: 21580267
references.citation: Spectrochim Acta A Mol Biomol Spectrosc. 2015 Feb 25;137:477-85
references.pmid: 25238187