title: Crystal structure of 3-[(E)-2-(4-phenyl-1,3-thia-zol-2-yl)hydrazin-1-yl-idene]indolin-2-one.
abstract: In the title mol-ecule, C17H12N4OS, the thia-zole ring forms a dihedral angle of 10.8 (2)° with the phenyl ring and an angle of 3.1 (3)° with the indole ring system [which has a maximum deviation of 0.035 (2) Å]. The dihedral angle between the planes of the phenyl ring and the indole ring system is 11.5 (1)°. An intra-molecular N-H⋯O hydrogen bond is observed. In the crystal, pairs of N-H⋯O hydrogen bonds form inversion dimers with an R (2) 2(8) graph-set motif.
authors.affiliation: Department of Chemistry, Karnatak University, Dharwad, India.
authors.forename: Bhimashankar M
authors.initials: BM
authors.lastname: Halasangi
authors.affiliation: Department of Chemistry, Shri Sharanabasaveshwar College of Science, Gulbarga 585 102, India.
authors.forename: Prema S
authors.initials: PS
authors.lastname: Badami
authors.affiliation: Department of Chemistry, Karnatak University, Dharwad, India.
authors.forename: Sangamesh A
authors.initials: SA
authors.lastname: Patil
authors.affiliation: Department of Physics, M S Ramaiah Institute of Technology, Bangalore 560 054, Karnataka, India.
authors.forename: G N
authors.initials: GN
authors.lastname: Anil Kumar
keywords: 1,3-thia­zole; biological activity; crystal structure; hydrazine; hydrogen bonding; indolinone