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Search Results: 1 - 10 of 336568 matches for " H. C. Devarajegowda "
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4-Nitrophenyl 4-hydroxy-3-methylbenzoate
S. Sreenivasa,H. C. Devarajegowda,H. T. Srinivasa,Vijith Kumar
Acta Crystallographica Section E , 2012, DOI: 10.1107/s1600536812048271
Abstract: The asymmetric unit of the title compound, C14H11NO5, contains two independent molecules in which the dihedral angles between the benzene rings are 89.27 (16) and 77.14 (12)°. In the crystal, molecules are linked by O—H...O hydrogen bonds, generating C(8) chains propagating in [010] for one molecule and [001] C(8) chains for the other. The chains are connected by C—H...O hydrogen bonds and π–π interactions [shortest centroid–centroid distance = 3.5908 (12)°], generating a three-dimensional network.
1-Chloro-4-(3,4-dichlorophenyl)-3,4-dihydronaphthalene-2-carbaldehyde
H. C. Devarajegowda,P. Nagendra,S. Jeyaseelan,N. Chidananda
Acta Crystallographica Section E , 2011, DOI: 10.1107/s160053681100105x
Abstract: The title compound, C17H11Cl3O, was synthesized via the Vilsmeier–Haack reaction. The dihydronaphthalene ring system is non-planar, the dihedral angle between the two fused rings being 10.87 (13)°; it forms a dihedral angle of 81.45 (10)° with the dichlorophenyl ring. The crystal structure features intermolecular C—H...O hydrogen bonds.
4-Hydroxy-6-(4-methoxyphenyl)-4-phenyl-1,3-diazinane-2-thione
H. C. Devarajegowda,K. R. Roopashree,Irfan Ali Mohammed,Mahalakshmi
Acta Crystallographica Section E , 2011, DOI: 10.1107/s1600536811008002
Abstract: In the title compound, C17H18N2O2S, the 1,3-diazinane-2-thione ring system is not coplanar with the benzene ring and methoxyphenyl ring system, the dihedral angle between the planes being 65.58 (13) and 89.18 (10)°, respectively. The crystal structure is characterized by intermolecular O—H...S, N—H...S, N—H...O and C—H...S hydrogen bonding.
1-(1-Benzofuran-2-yl)-3-(4-chlorophenyl)prop-2-en-1-one
S. Jeyaseelan,H. C. Devarajegowda,G. Venkatarama,M. Vinduvahini
Acta Crystallographica Section E , 2010, DOI: 10.1107/s1600536810003004
Abstract: In the title compound, C17H11ClO2, the benzofuran ring system is almost planar (r.m.s. deviation = 0.011 ) and forms a dihedral angle of 10.53 (6)° with the chlorophenyl ring. No significant intermolecular interactions are observed.
1-{1-[2,8-Bis(trifluoromethyl)-4-quinolyl]-5-methyl-1H-1,2,3-triazol-4-yl}ethanone
H. C. Devarajegowda,S. Jeyaseelan,V. Sumangala,Bojapoojary
Acta Crystallographica Section E , 2010, DOI: 10.1107/s1600536810034926
Abstract: There are two independent molecules in the asymmetric unit of the title compound, C16H10F6N4O. The triazole ring is not coplanar with the quinoline ring system; the dihedral angle between the two planes being 74.47 (12) and 63.97 (13)° in the two molecules. The crystal structure is characterized by intermolecular C—H...F, C—H...N and C—H...O hydrogen bonding. Weak intramolecular C—H...F interactions are observed. Disorder is observed in two F atoms of one of the trifluoromethyl groups of one independent molecule [occupancy ratios 0.77 (3):0.23 (3) and 0.77 (4):0.23 (4)] and in all three F atoms of one of the trifluoromethyl groups of the second independent molecule [occupancy ratios 0.520 (14):0.480 (14), 0.615 (17):0.385 (17) and 0.783 (11):0.217 (11)]. The O atom is also disordered over two positions with occupancies of 0.60 (13) and 0.40 (13) in the first molecule.
1,3-Bis(hydroxymethyl)benzimidazolin-2-one
H. C. Devarajegowda,V. Madhura,B. S. Palakshamurthy,S. Jeyaseelan
Acta Crystallographica Section E , 2009, DOI: 10.1107/s1600536809040963
Abstract: The title compound, C9H10N2O3, crystallizes with one and a half molecules in the asymmetric unit, one lying on a general position and the other on a twofold rotation axis. The dihedral angle between the two independent benzimidazole ring systems is 18.96 (5)°. In the crystal, molecules are linked into a three-dimensional network by O—H...O hydrogen bonding involving N-hydroxymethyl and carbonyl groups, and C—H...O hydrogen bonds.
(2E)-3-(2-Bromophenyl)-1-(5-bromothiophen-2-yl)prop-2-en-1-one
Suresh B. Vepuri,H. C. Devarajegowda,S. Jeyaseelan,S. Anbazhagan
Acta Crystallographica Section E , 2012, DOI: 10.1107/s1600536812047939
Abstract: The asymmetric unit of the title compound, C13H8Br2OS, contains two molecules, in which the dihedral angles between the thiophene and benzene rings are 10.5 (3) and 33.2 (4)°. There are no significant directional interactions in the crystal.
SYNTHESIS CHARACTERISATION AND APPLICATION OF NOVEL COMPOSITE MN6+: ZNO NANOCRYSTALS
H R RAVI, P NAVEEN KUMAR, C P SAJAN, N PAVAN, S CHANDRAMMA, H C DEVARAJEGOWDA
International Journal of Electronics and Communication Engineering And Technology (IJECET) , 2016,
Abstract: The hydrothermally synthesis of Mn6+ doped ZnO nanocrystals at 1500C with an autogenous pressure and experimental duration of 40 hrs has been reported. A control over the particle size, morphology and crystallinity of the as prepared compound has been studied with respect to the experimental parameters like nutrient composition, solvent, experimental duration, temperature, pressure and so on. The products synthesized were characterized using XRD, SEM, FTIR and DLS. The photodegradation of textile effluent using these composite was investigated under both solar and UV irradiation. The degradation of textile effluent was checked by the following parameters like COD, %T, irradiation time and duration. The preliminary results are highly encouraging and further work is being carried out for the use of these photocatalytic compounds for other organic decomposition.
4-Ethoxyphenyl 4-[(methoxycarbonyl)oxy]benzoate
H. T. Srinivasa,H. C. Devarajegowda,H. K. Arunkashi,T. G. Meenakshi
Acta Crystallographica Section E , 2010, DOI: 10.1107/s1600536810044661
Abstract: In the title compound, C17H16O6, the two benzene rings form a dihedral angle of 54.95 (10)°. Only weak intermolecular interactions are present in the crystal structure, viz. C—H...O hydrogen bonds and C—H...π interactions involving one of the benzene rings.
Nicotinaldehyde [2,8-bis(trifluoromethyl)quinolin-4-yl]hydrazone monohydrate
H. C. Devarajegowda,Suresh Babu Vepuri,M. VinduVahini,H. D. Kavitha
Acta Crystallographica Section E , 2010, DOI: 10.1107/s1600536810030862
Abstract: In the title compound, C17H10F6N4·H2O, the pyridine ring is not coplanar with the quinoline ring system; the dihedral angle between the two planes is 21.3 (1)°. One of the trifluoromethyl group is disordered over two orientations with occupancies of 0.70 (1) and 0.30 (1). The water molecule is disordered over two positions with occupancies of 0.76 (1) and 0.24 (1). In the crystal, the water molecule is linked to the main molecule via N—H...O and C—H...O hydrogen bonds, and inversion-related pairs are linked via O—H...N hydrogen bonds. In addition, a weak π–π interaction is observed between the pyridine ring and the pyridine ring of the quinoline unit, with a centroid–centroid distance of 3.650 (2) .
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