title: (1E,2E)-1,2-Bis(2,3-dihydro-1H-inden-1-yl-idene)hydrazine.
abstract: In the title compound, C(18)H(16)N(2), there are two independent half-mol-ecules (A and B) in the asymmetric unit, each mol-ecule being completed by an inversion center situated in the mid-point of the central N-N bond. The mol-ecules themselves therefore are essentially planar with r.m.s. deviations of 0.015 (1) and 0.020 (1) Å, respectively. In the crystal, mol-ecules are connected via C-H⋯π inter-actions in which only type B mol-ecules are donors, while both A and B mol-ecules act as acceptors. As a result, type B mol-ecules are linked into infinite chains along b, which are inter-connected by molecules of type A.
authors.forename: Wolfgang
authors.initials: W
authors.lastname: Imhof
authors.forename: Joachim
authors.initials: J
authors.lastname: Wunderle