title: (1RS,2RS)-N,N'-Bis(4-nitrophenylmethylene)cyclohexane-1,2-diamine: complex sheets built from C-H...O and C-H...pi(arene) hydrogen bonds.
abstract: The racemic title compound, C20H20N4O4, crystallizes with Z'=2 in the space group P2(1)/c. Each independent molecule exhibits approximate twofold rotation symmetry, but conformational differences between the molecules preclude any higher symmetry. The molecules are linked into complex sheets by a combination of four C-H...O hydrogen bonds and two C-H...pi(arene) hydrogen bonds.
authors.affiliation: School of Chemistry, University of St Andrews, Fife KY16 9ST, Scotland. cg@st-andrews.ac.uk
authors.forename: Christopher
authors.initials: C
authors.lastname: Glidewell
authors.forename: John N
authors.initials: JN
authors.lastname: Low
authors.forename: Janet M S
authors.initials: JM
authors.lastname: Skakle
authors.forename: James L
authors.initials: JL
authors.lastname: Wardell