title: 1,5-Bis[(E)-cyclo-pentyl-idene]thio-carbono-hydrazide.
abstract: In the title mol-ecule, C(11)H(18)N(4)S, an intra-molecular N-H⋯N hydrogen bond [N⋯N = 2.558 (3)Å] is observed. The two cyclo-pentyl rings are disordered between two conformations in 1:1 and 2:1 ratios. In the crystal structure, weak inter-molecular N-H⋯S hydrogen bonds [N⋯S = 3.547 (3) Å] link pairs of mol-ecules into centrosymmetric dimers.
authors.forename: Qingliang
authors.initials: Q
authors.lastname: Guo
authors.forename: Junshan
authors.initials: J
authors.lastname: Sun
authors.forename: Jikun
authors.initials: J
authors.lastname: Li
authors.forename: Rentao
authors.initials: R
authors.lastname: Wu
authors.forename: Wenzeng
authors.initials: W
authors.lastname: Duan