title: (2E)-2-{[3-Methyl-5-(2-naphth-yloxy)-1-phenyl-1H-pyrazol-4-yl]methyl-idene}hydrazinecarbothio-amide monohydrate.
abstract: In the title compound, C(22)H(19)N(5)OS·H(2)O, the naphthalene ring system and the benzene ring [dihedral angle = 85.19 (8)°] make dihedral angles of 87.02 (9) and 14.41 (10)°, respectively, with the pyrazole ring. The mean plane through the 2-methyl-enehydrazinecarbothio-amide group [C-N-N-C(=S)-N; maximum deviation = 0.022 (1) Å] is slightly twisted from the pyrazole ring [dihedral angle = 5.60 (11)°]. In the crystal, mol-ecules are linked by N-H⋯S, N-H⋯O, O-H⋯S, O-H⋯N and C-H⋯S hydrogen bonds into sheets parallel to the ab plane. π-π inter-actions are also observed [centroid-to-centroid distances = 3.7778 (12) and 3.7010 (12) Å].
authors.affiliation: X-ray Crystallography Unit, School of Physics, Universiti Sains Malaysia, 11800 USM, Penang,  Malaysia ; Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, Riyadh 11451,  Saudi Arabia.
authors.forename: Hoong-Kun
authors.initials: HK
authors.lastname: Fun
authors.forename: Tze Shyang
authors.initials: TS
authors.lastname: Chia
authors.forename: Shobhitha
authors.initials: S
authors.lastname: Shetty
authors.forename: Balakrishna
authors.initials: B
authors.lastname: Kalluraya
authors.lastname: Nithinchandra