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Jothi L.,NKR Government Arts College for Women | Vasuki G.,Kunthavai Naachiar Government Arts College W Autonomous | Babu R.R.,Bharathidasan University | Ramamurthi K.,Bharathidasan University
Acta Crystallographica Section E: Structure Reports Online | Year: 2012

In the title compound, C 13H 10BrNO, the benzene ring planes are inclined at an angle of 48.85 (17)°, resulting in a nonplanar mol-ecule. A characteristic of aromatic Schiff bases with N-aryl substituents is that the terminal phenyl rings are twisted relative to the HC=N plane. In this case, the HC=N unit makes dihedral angles of 11.1 (4) and 38.5 (3)° with the hy-droxy-benzene and bromo-benzene rings, respectively. In the crystal, the molecules are linked by O - H⋯N hydrogen bonds to form infinite (C8) chains along the b axis.


Novina J.J.,Idhaya College for Women | Vasuki G.,Kunthavai Naachiar Government Arts College W Autonomous | Kumar S.,Indian Institute of Technology Roorkee | Thomas K.R.J.,Indian Institute of Technology Roorkee
Acta Crystallographica Section E: Structure Reports Online | Year: 2012

The title compound, C 12H 7Br 2NO 2, a biphenyl derivative, displays a twisted conformation with the two benzene rings making a dihedral angle of 55.34 (14)°. The dihedral angle between the nitro group and its parent benzene ring is 26.8 (2)°. The crystal structure is stabilized by intermolecular C - H⋯Br and C - H⋯O interactions, which lead to the formation of chains propagating along the c-axis direction.


Gurumoorthy A.,Saveetha University | Gopalsamy V.,Kunthavai Naachiar Government Arts College W Autonomous | Ramamurthi K.,Bharathidasan University | Unluer D.,University of Science and Arts of Iran | Elik F.,University of Science and Arts of Iran
Acta Crystallographica Section E: Structure Reports Online | Year: 2011

In the title compound, C16H17N3O 2S·H2O, the triazole ring makes a dihedral angle of 34.63 (6)°with the benzene ring. The thio-phene ring is disordered over two orientations [occupancy ratio = 0.634 (4):0.366 (4)] which make dihedral angles of 54.61 (16) and 54.57 (31)°with the triazole ring. Inter-molecular N - H⋯O and O - H⋯O hydrogen bonds stabilize the crystal structure.


Jothi L.,NKR Government Arts College for Women | Vasuki G.,Kunthavai Naachiar Government Arts College W Autonomous | Babu R.R.,Bharathidasan University | Ramamurthi K.,Bharathidasan University
Acta Crystallographica Section E: Structure Reports Online | Year: 2012

In the title compound, C 14H 13NO, the two rings show significant deviation from coplanarity, with a dihedral angle between the two planes of 49.40 (5)°. The hydroxy group is involved in an intermolecular O - H⋯N hydrogen bond, forming an extended one-dimensional zigzag chain along (001).


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.

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