Idhaya College for Women

Kumbakonam, India

Idhaya College for Women

Kumbakonam, India
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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.


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
Acta Crystallographica Section E: Structure Reports Online | Year: 2014

In the title hydrated compound, C15H1 5N3O3-H2O, the nicotinohydrazide molecule adopts a trans conformation with respect to the C N double bond. The dihedral angle between the benzene and pyridine rings is 5.10 (14)-. In the crystal, the solvent water molecule acts as an acceptor, forming an N-H⋯O hydrogen bond supported by two C-H⋯O contacts. It also acts as a donor, forming bifurcated O-H⋯(O,O) and O-H⋯N hydrogen bonds that combine with the former contacts to form zigzag chains of molecules along the c-axis direction. An additional O-H⋯O donor contact completes a set of six hydrogen bonds to and from the water molecule and connects it to a third nicotinohydrazide molecule. This latter contact combines with weaker C-H⋯O hydrogen bonds supported by a C-H⋯-contact to stack molecules along b in a three-dimensional network.


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.


PubMed | Idhaya College for Women, Kunthavai Naachiar Government Arts College W Autonomous and Jamal Mohamed College Autonomous
Type: Journal Article | Journal: Acta crystallographica. Section E, Structure reports online | Year: 2014

In the title hydrated compound, C15H15N3O3H2O, the nicotinohydrazide mol-ecule adopts a trans conformation with respect to the C=N double bond. The dihedral angle between the benzene and pyridine rings is 5.10(14). In the crystal, the solvent water mol-ecule acts as an acceptor, forming an N-HO hydrogen bond supported by two C-HO contacts. It also acts as a donor, forming bifurcated O-H(O,O) and O-HN hydrogen bonds that combine with the former contacts to form zigzag chains of mol-ecules along the c-axis direction. An additional O-HO donor contact completes a set of six hydrogen bonds to and from the water mol-ecule and connects it to a third nicotinohydrazide mol-ecule. This latter contact combines with weaker C-HO hydrogen bonds supported by a C-H contact to stack mol-ecules along b in a three-dimensional network.


PubMed | Idhaya College for Women, Kunthavai Naachiar Government Arts College W Autonomous, University of Madras and Jamal Mohamed College Autonomous
Type: Journal Article | Journal: Acta crystallographica. Section E, Crystallographic communications | Year: 2015

In the title compound, C17H21ClN2O6, the di-hydro-pyrimidine ring adopts a flattened envelope conformation, with the sp (3)-hybridized C atom forming the flap. The dihedral angle between the least-squares planes of the benzene and di-hydro-pyrimidine rings is 88.09(6). An intra-molecular C-HO hydrogen bond generates an S(6) ring. In the crystal, mol-ecules are linked via pairs of N-HO hydrogen bonds, forming inversion dimers with an R 2 (2)(8) ring motif, and the dimers are linked via further pairs of N-HO hydrogen bonds, forming R 2 (2)(14) rings and chains of mol-ecules along [111]. Pairs of inversion-related chains are linked via weak C-H inter-actions.


PubMed | Idhaya College for Women, Kunthavai Naachiar Government Arts College W Autonomous, Government Arts College Autonomous and Jamal Mohamed College Autonomous
Type: Journal Article | Journal: Acta crystallographica. Section E, Structure reports online | Year: 2014

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-HO, O-HN, N-HCl, C-HCl, C-HO, N-HO, O-HCl and C-HS inter-actions that consolidate a three-dimensional network.


PubMed | Idhaya College for Women, Kunthavai Naachiar Government Arts College W Autonomous and Jamal Mohamed College Autonomous
Type: Journal Article | Journal: Acta crystallographica. Section E, Crystallographic communications | Year: 2015

In the title compound, C17H22N2O6, the di-hydro-pyrimidine ring adopts a flattened boat conformation. The dihedral angle between the benzene ring and the mean plane of the di-hydro-pyrimidine ring is 75.25(6). In the crystal, mol-ecules are linked via pairs of N-HO hydrogen bonds, forming inversion dimers with an R 2 (2)(8) ring motif which are linked through N-HO and weak C-HO hydrogen bonds. These, together with - ring inter-actions [centroid-centroid distance = 3.7965(10)], give an overall three-dimensional structure.


PubMed | Idhaya College for Women, Kunthavai Naachiar Government Arts College W Autonomous, University of Madras and Jamal Mohamed College Autonomous
Type: Journal Article | Journal: Acta crystallographica. Section E, Crystallographic communications | Year: 2015

In the title compound, C12H14N2O2S2, the di-hydro-pyrimidine ring adopts a sofa conformation, with the C atom bearing the thienyl ring lying above the plane of the five remaining approximately coplanar (r.m.s. deviation = 0.0405) atoms of the ring. The dihedral angle between the five near coplanar atoms of the ring and the thienyl ring is 89.78(11). In the crystal, mol-ecules are linked into a supra-molecular chain along [100] via N-HO(carbon-yl) hydrogen bonds. Inversion-related chains are linked into double chains via N-HS(thione) hydrogen bonds. The three-dimensional architecture also features meth-yl-thienyl C-H inter-actions.


PubMed | Idhaya College for Women, Kunthavai Naachiar Government Arts College W Autonomous and Jamal Mohamed College
Type: Journal Article | Journal: Acta crystallographica. Section E, Crystallographic communications | 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-HO, N-HCl, C-HO, C-HCl, O-HO, O-HN and O-HCl hydrogen bonds link the complex cations, chloride anions and solvent water mol-ecules into a three-dimensional network.


Jeyasubramanian K.,Mepco Schlenk Engineering College, Sivakasi | Hikku G.S.,Mepco Schlenk Engineering College, Sivakasi | Sivashakthi M.,Idhaya College for Women
Materials Science in Semiconductor Processing | Year: 2016

Novel mixed metal oxides of Zinc and Tin (MZOTO) were synthesized by a simple co-precipitation method. The effect of blending varying compositions of SnOx (x=1, 2) to ZnO has been evaluated, and it was found that the crystal structure, morphology, optical properties and photo-catalytic behavior were dependent on the percentage of SnOx. The obtained samples were characterized using XRD, EDAX, FESEM, UV-vis spectroscopy, Photoluminescence, etc. XRD data revealed that the ZnO and SnOx co-exist as mixture and their structures were found as hexagonal and cubic/orthorhombic respectively. FESEM image intricate about the morphology of the MZOTO prepared in 1:0.5 ratio providing nano flower structures that resemble like Chrysanthemum species. The band gaps of all the obtained MZOTOs were determined from UV-vis reflectance spectra using Kubelka-Munk relation. Photoluminescence emission studies revealed that the recombination of excited e- with the h+ of ZnO is greatly influenced by SnOx nanoparticles. Visible light photo-catalytic activities of MZOTOs were followed spectrophotometrically against the degradation of crystal violet solution. MZOTO2 obtained in the ratio of 1:0.5 shows better catalytic efficiency compared to other samples, degrading crystal violet completely within 40 min. The reusability and free radical trapping experiments were performed to study the performance and mechanism of MZOTO2 as the photo-catalyst. The photo catalytic efficiency of 1:0.5 MZOTO was higher due to the presence of flower-like structures that effectively captivated more photons from the sunlight. © 2016 Elsevier Ltd. All rights reserved.

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