title: Crystal structure of 4-({(1E,2E)-3-[3-(4-fluoro-phen-yl)-1-isopropyl-1H-indol-2-yl]allyl-idene}amino)-1H-1,2,4-triazole-5(4H)-thione.
abstract: The asymmetric unit of the titled compound, C22H20FN5S, comprises two independent mol-ecules (A and B), both of which have a trans conformation with respect to the methene C=C [1.342 (2) and 1.335 (2) Å] and the acyclic N=C [1.283 (2) and 1.281 (2) Å] bonds. In mol-ecule A, the triazole ring makes dihedral angles of 55.01 (12) and 18.17 (9)° with the benzene and indole rings, respectively. The corresponding dihedral angles for mol-ecule B are 54.54 (11) and 14.60 (10)°, respectively. In the crystal, mol-ecules are consolidated into -A-B-A-B- chains along [010] via N-H⋯N hydrogen bonds. The chains are further linked into layers parallel to the ac plane via π-π inter-actions involving inversion-related triazole rings [centroid-centroid distances = 3.3436 (11)-3.4792 (13) Å].
authors: Department of Chemistry, KLS's Gogte Institute of Technology, Jnana Ganga, Udyambag, Belagavi 590 008 Karnataka, India.
authors: Ajaykumar D
authors: AD
authors: Kulkarni
authors: University Malaysia Pahang, Faculty of Industrial Sciences and Technology, 26300 Gambang, Kuantan, Pahang, Malaysia.
authors: Md Lutfor
authors: ML
authors: Rahman
authors: University Malaysia Pahang, Faculty of Industrial Sciences and Technology, 26300 Gambang, Kuantan, Pahang, Malaysia.
authors: Mashitah
authors: M
authors: Mohd Yusoff
authors: School of Chemical Sciences, Universiti Sains Malaysia, 11800 USM, Penang, Malaysia.
authors: Huey Chong
authors: HC
authors: Kwong
authors: X-ray Crystallography Unit, School of Physics, Universiti Sains Malaysia, 11800 USM, Penang, Malaysia.
authors: Ching Kheng
authors: CK
authors: Quah
keywords: 1,2,4-triazole-3-thione; C—H⋯π inter­actions; N—H⋯N hydrogen bonds; Schiff base; crystal structure; indole; π–π inter­actions