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Kumbakonam, India

Novina J.J.,Idhaya College for Women | Vasuki G.,Kunthavai Naachiar Government Arts College W Autonomous | Baheti A.,Indian Institute of Technology Roorkee | Thomas K.R.J.,Indian Institute of Technology Roorkee
Acta Crystallographica Section E: Structure Reports Online | Year: 2013

In the title compound, C19H13Br2NO, the dihedral angle between the rings of the biphenyl group is 53.59 (14)°. The ring of the benzamide group is inclined to the phenyl rings of the biphenyl group by 23.87 (15) and 75.89 (15)°. There are no significant intermolecular interactions in the crystal structure. Source


Novina J.J.,Idhaya College for Women | Vasuki G.,Kunthavai Naachiar Government Arts College W Autonomous | Suresh M.,Jamal Mohamed College | Padusha M.S.A.,Jamal Mohamed College
Acta Crystallographica Section E: Structure Reports Online | Year: 2013

In the title compound, C14H13N3O2·2H2O, the hydrazone molecule adopts an E conformation with respect to the C=N bond. The dihedral angle between the benzene and pyridine rings is 8.55 (10)°. The methylidene-hydrazide [-C(=O)-N-N=C-] fragment is essentially planar, with a maximum deviation of 0.0375 (13) Å. The mean planes of the benzene and pyridine rings make dihedral angles of 2.71 (14) and 11.25 (13)°, respectively, with mean plane of the methylidene-hydrazide fragment. In the crystal, the benzohydrazide and water molecules are linked by N - H...O, O - H...O and O - H...N hydrogen bonds into a three-dimensional network. Source


Josephine Novina J.,Idhaya College for Women | Vasuki G.,Kunthavai Naachiar Government Arts College W Autonomous | Suresh M.,Jamal Mohamed College | Syed Ali Padusha M.,Jamal Mohamed College | Buyukgungor O.,Ondokuz Mayis University
Acta Crystallographica Section E: Structure Reports Online | Year: 2015

In the title hydrated salt, C13H10Cl2N3O+·Cl-·3H2O, the organic cation exhibits a dihedral angle of 8.26 (14)° between the mean planes of the pyridinium and benzene rings, and dihedral angles of 8.70 (15) and 15.93 (5)° between the mean planes of the hydrazide group and the benzene and pyridinium rings, respectively. In the crystal, N - H⋯O, N - H·Cl, C - H⋯O, C - H·Cl, O - H⋯O, O - H·N and O - H·Cl hydrogen bonds link the complex cations, chloride anions and solvent water molecules into a three-dimensional network. Source


Novina J.J.,Idhaya College for Women | Vasuki G.,Kunthavai Naachiar Government Arts College W Autonomous | Suresh M.,Jamal Mohamed College Autonomous | Syed Ali Padusha M.,Jamal Mohamed College Autonomous | Smith G.,Queensland University of Technology
Acta Crystallographica Section E: Structure Reports Online | Year: 2015

In the title compound, C17H22N2O6, the dihydropyrimidine ring adopts a flattened boat conformation. The dihedral angle between the benzene ring and the mean plane of the dihydropyrimidine ring is 75.25 (6)°. In the crystal, molecules are linked via pairs of N - H⋯O hydrogen bonds, forming inversion dimers with an R22(8) ring motif which are linked through N - H⋯O and weak C - H⋯O hydrogen bonds. These, together with π-π ring interactions [centroid-centroid distance = 3.7965 (10) Å], give an overall three-dimensional structure. Source


Josephine Novina J.,Idhaya College for Women | Vasuki G.,Kunthavai Naachiar Government Arts College W Autonomous | Liu Y.,Xuzhou Normal University | Sun J.-W.,Xuzhou Normal University
Acta Crystallographica Section E: Structure Reports Online | Year: 2012

In the title compound, C25H17NO4, the indolizine fused naphthaquinone unit is approximately planar [r.m.s deviation = 0.0678 Å] and makes a dihedral angle of 57.82 (5)° with the benzene ring of the methoxybenzene group. The naphthoquinone O atoms deviate, in the same sense, from the mean plane of the fused six-membered rings by 0.2001 (14) and 0.0516 (14) Å. In the crystal there is π-π stacking of inversion-related pairs of molecules [interplanar spacing = 3.514 (2) Å]. Source

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