title: 1H-Indole-3-carbaldehyde azine.
abstract: The molecule of the title compound, C(18)H(14)N(4), lies on a center of inversion such that there is one half-mol-ecule in the asymmetric unit. The N-N single bond adopts a trans configuration and the indole fused-ring system is nearly coplanar with the -CH=N-N=CH- fragment [dihedral angle = 9.8 (2)°]. Adjacent mol-ecules are linked by indole-azine N-H⋯N hydrogen bonds into a layer motif.
authors.affiliation: Department of Chemistry, University of Malaya, 50603 Kuala Lumpur, Malaysia.
authors.forename: Mohd Razali
authors.initials: MR
authors.lastname: Rizal
authors.forename: Hapipah M
authors.initials: HM
authors.lastname: Ali
authors.forename: Seik Weng
authors.initials: SW
authors.lastname: Ng