title: Crystal structure of 3-({[(thio-phen-2-yl)methyl-idene]hydrazin-yl}carbon-yl)pyridinium chloride dihydrate.
abstract: In the title compound, C11H10N3OS(+)·Cl(-)·2H2O, the organic cation exhibits a dihedral angle of 21.26 (8)° between the mean planes of the pyridine and thio-phene rings, and dihedral angles of 15.11 (9) and 6.49 (9)° between the mean planes of the hydrazide moiety and the pyridine and thio-phene rings, respectively. In the crystal, the organic cation, the chloride counter-anion and the two water mol-ecules of crystallization are linked through an intricate hydrogen-bonding network consisting of O-H⋯O, O-H⋯N, N-H⋯Cl, C-H⋯Cl, C-H⋯O, N-H⋯O, O-H⋯Cl and C-H⋯S inter-actions that consolidate a three-dimensional network.
authors.affiliation: PG & Research Department of Chemistry, Jamal Mohamed College (Autonomous), Tiruchirappalli-20, India.
authors.forename: Thangayyah
authors.initials: T
authors.lastname: Chandrasekaran
authors.affiliation: PG & Research Department of Chemistry, Jamal Mohamed College (Autonomous), Tiruchirappalli-20, India.
authors.forename: Mani
authors.initials: M
authors.lastname: Suresh
authors.affiliation: Department of Physics, Idhaya College for Women, Kumbakonam-1, India.
authors.forename: John
authors.initials: J
authors.lastname: Josephine Novina
authors.affiliation: PG & Research Department of Chemistry, Jamal Mohamed College (Autonomous), Tiruchirappalli-20, India.
authors.forename: Mohamed Khan
authors.initials: MK
authors.lastname: Syed Ali Padusha
authors.affiliation: Department of Physics, Kunthavai Naachiar Govt. Arts College (W) (Autonomous), Thanjavur-7, India.
authors.forename: Gopalsamy
authors.initials: G
authors.lastname: Vasuki
authors.affiliation: Department of Chemistry, Govt. Arts College (Autonomous), Thanthonimalai, Karur-5, India.
authors.forename: Balasubramani
authors.initials: B
authors.lastname: Kasthuri
keywords: crystal structure; hydrazone derivatives; hydrogen bonding; pyridinium chloride salt