title: (Z)-7-[2-(4-Bromo-phen-yl)hydrazin-1-yl-idene]-6-methyl-3-(pyridin-4-yl)-7H-1,2,4-triazolo[3,4-b][1,3,4]thia-diazine.
abstract: In the asymmetric unit of the title compound, C(16)H(12)BrN(7)S, there are two crystallographically independent mol-ecules with similar conformations. Both mol-ecules are slightly twisted; the central 1,2,4-triazolo[3,4-b]-1,3,4-thia-diazine ring system makes dihedral angles of 9.65 (15) and 13.29 (15)° with the pyridine and benzene rings, respectively, in one mol-ecule, whereas the corresponding values in the other mol-ecule are 9.30 (15) and 4.84 (15)°. A weak intra-molecular C-H⋯N inter-action with an S(6) ring motif is observed in each mol-ecule. In the crystal, the independent mol-ecules are each linked through N-H⋯N hydrogen bonds and weak C-H⋯N interactions into ribbons along the c axis. The ribbons are further linked together by weak C-H⋯N, C-H⋯π and π-π [centroid-centroid distances = 3.572 (2)-3.884 (2) Å] inter-actions.
authors.forename: Hoong-Kun
authors.initials: HK
authors.lastname: Fun
authors.forename: Suchada
authors.initials: S
authors.lastname: Chantrapromma
authors.forename: Mashooq A
authors.initials: MA
authors.lastname: Bhat
authors.forename: Hatem A
authors.initials: HA
authors.lastname: Abdel-Aziz