title: Crystal structure of 4-({(1E,2E)-3-[3-(4-fluoro-phen-yl)-1-isopropyl-1H-indol-2-yl]allyl-idene}amino)-5-methyl-1H-1,2,4-triazole-5(4H)-thione.
abstract: The title compound, C23H22FN5S, exists in a trans conformation with respect to the methene C=C and the acyclic N=C bonds. The 1,2,4-triazole-5(4H)-thione ring makes dihedral angles of 88.66 (9) and 84.51 (10)°, respectively, with the indole and benzene rings. In the crystal, mol-ecules are linked by pairs of N-H⋯S hydrogen bonds, forming inversion dimers with an R 2 (2)(8) ring motif. The dimers are linked via C-H⋯π inter-actions, forming chains along [1-10]. The chains are linked via π-π inter-actions involving inversion-related triazole rings [centroid-centroid distance = 3.4340 (13) Å], forming layers parallel to the ab plane.
authors.affiliation: Department of Chemistry, KLS's Gogte Institute of Technology, Jnana Ganga, Udyambag, Belagavi 590 008 Karnataka, India.
authors.forename: Ajaykumar D
authors.initials: AD
authors.lastname: Kulkarni
authors.affiliation: University Malaysia Pahang, Faculty of Industrial Sciences and Technology, 26300 Gambang, Kuantan, Pahang, Malaysia.
authors.forename: Md Lutfor
authors.initials: ML
authors.lastname: Rahman
authors.affiliation: University Malaysia Pahang, Faculty of Industrial Sciences and Technology, 26300 Gambang, Kuantan, Pahang, Malaysia.
authors.forename: Mashitah
authors.initials: M
authors.lastname: Mohd Yusoff
authors.affiliation: School of Chemical Sciences, Universiti Sains Malaysia, 11800 USM, Penang, Malaysia.
authors.forename: Huey Chong
authors.initials: HC
authors.lastname: Kwong
authors.affiliation: X-ray Crystallography Unit, School of Physics, Universiti Sains Malaysia, 11800 USM, Penang, Malaysia.
authors.forename: Ching Kheng
authors.initials: CK
authors.lastname: Quah
keywords: 1,2,4-triazole-5(4H)-thione; C—H⋯π and π–π inter­actions; N—H⋯S hydrogen bonds; Schiff base; crystal structure; indole