Browsing by Author "Satyanarayan, M.N."

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2-(4-Bromo-phen-yl)-2-oxoethyl 2-meth-oxy-benzoate
(2011) Fun, H.-K.; Ching Kheng, C.K.; Garudachari, B.; Isloor, A.M.; Satyanarayan, M.N.
In the title mol-ecule, C 16H 13BrO 4, the dihedral angle between the benzene rings is 85.92 (10)°. In the crystal, mol-ecules are linked into chains along [100] via weak inter-molecular C - H?O hydrogen bonds. © Fun et al. 2011.
2-(4-Bromo-phen-yl)-2-oxoethyl 4-bromo-benzoate
(2011) Fun, H.-K.; Arshad, S.; Garudachari, B.; Isloor, A.M.; Satyanarayan, M.N.
The asymmetric unit of the title compound, C 15H 10Br 2O 3, consists of three crystallographically independent mol-ecules (A, B and C). The phenyl rings in mol-ecules A, B and C make dihedral angles of 6.1 (3), 3.2 (2) and 54.6 (2)° to each other, respectively. In the crystal, mol-ecules are linked into two-dimensional layers parallel to the ab plane by inter-molecular C - H?O hydrogen bonds. The crystal structure is further stabilized by C - H?? inter-actions. The studied crystal is an inversion twin, the refined ratio of the twin components being 0.128 (8):0.872 (8). © Fun et al. 2011.
2-(4-Bromo-phen-yl)-2-oxoethyl 4-chloro-benzoate
(2011) Fun, H.-K.; Yeap, C.S.; Garudachari, B.; Isloor, A.M.; Satyanarayan, M.N.
The asymmetric unit of the title compound, C 15H 10BrClO 3, consists of three crystallographically independent mol-ecules. The dihedral angles between the benzene rings in the three mol-ecules are 68.8 (2), 0.7 (3) and 66.1 (2)°. In the crystal, the three independent mol-ecules are inter-connected by C - H?O hydrogen bonds, leading to isolated trimers. © Fun et al. 2011.
2-(4-Bromo-phen-yl)-2-oxoethyl 4-meth-oxy-benzoate
(2011) Fun, H.-K.; Loh, W.-S.; Garudachari, B.; Isloor, A.M.; Satyanarayan, M.N.
In the title compound, C16H13BrO4, the benzene rings are almost perpendicular to each other, making a dihedral angle of 84.07 (8)°. In the crystal, the mol-ecules are linked into chains along the a axis via inter-molecular C - H?O hydrogen bonds. A C - H?? inter-action is also observed.
2-(4-Bromophenyl)-2-oxoethyl 2-methylbenzoate
(2011) Fun, H.-K.; Ooi, C.W.; Garudachari, B.; Isloor, A.M.; Satyanarayan, M.N.
In the title compound, C16H13BrO3, the dihedral angle formed between the bromo- and methyl-substituted benzene rings is 66.66 (8)°. In the crystal, molecules are linked by inter-molecular C - H?O hydrogen bonds, forming a two-dimensional network parallel to the ac plane. The crystal packing is further consolidated by C - H?? interactions. © Fun et al. 2011.
2-(4-Bromophenyl)-2-oxoethyl 4-hydroxybenzoate
(2011) Fun, H.-K.; Loh, W.-S.; Garudachari, B.; Isloor, A.M.; Satyanarayan, M.N.
In the title compound, C15H11BrO4, the dihedral angle between the aromatic rings is 66.77 (8) . In the crystal, O - H?O, C - H?Br and C - H?O hydrogen bonds link the molecules, forming layers lying parallel to (101). The crystal packing is further consolidated by C - H?? inter-actions and ?-? stacking interactions [centroid-centroid distance = 3.5476 (7) ]. Fun et al. 2011.
2-(4-Bromophenyl)-2-oxoethyl 4-methylbenzoate
(2011) Fun, H.-K.; Shahani, T.; Garudachari, B.; Isloor, A.M.; Satyanarayan, M.N.
The title compound, C16H13BrO3, consists of a toluene ring and a bromo-benzene ring which are linked together by a 2-oxopropyl acetate group. The dihedral angle formed between the toluene and bromo-benzene rings is 80.70 (7)°. In the crystal, intermolecular C-H?O hydrogen bonds link the molecules into a three-dimensional network.
2-(4-Bromophenyl)-2-oxoethyl anthracene-9-carboxylate
(2012) Fun, H.-K.; Asik, S.I.J.; Garudachari, B.; Isloor, A.M.; Satyanarayan, M.N.
In the title compound, C23H15BrO3, the anthracene ring system is essentially planar [maximum deviation = 0.29 (2) Å] and makes a dihedral angle of 5.74 (8)°with the mean plane of the bromo-substituted benzene ring. An intramolecular C - H?O hydrogen bond generates an S(9) ring motif. In the crystal, molecules are linked by C - H?O interactions, forming a two-dimensional network parallel to the ac plane. ?-? stacking interactions are observed between benzene rings [centroid-centroid distances = 3.5949 (14) and 3.5960 (13) Å].
2-(4-Chloro-phen-yl)-2-oxoethyl 2,4-di-fluoro-benzoate
(2011) Fun, H.-K.; Arshad, S.; Garudachari, B.; Isloor, A.M.; Satyanarayan, M.N.
The asymmetric unit of title compound, C 15H 9C lF 2O 3, consists of two crystallographically independent mol-ecules. The dihedral angle between the two terminal benzene rings in one mol-ecule is 7.92 (14)°, while that in the other mol-ecule is 73.50 (16)°. In the crystal, mol-ecules are stacked into columns along the b axis by inter-molecular C - H?O hydrogen bonds. A ?-? inter-action with a centroid-to-centroid distance of 3.747 (2) Å further stabilizes the crystal structure. © Fun et al. 2011.
2-(4-Chloro-phen-yl)-2-oxoethyl 2-meth-oxy-benzoate
(2011) Fun, H.-K.; Asik, S.I.J.; Garudachari, B.; Isloor, A.M.; Satyanarayan, M.N.
In the title compound, C 16H 13ClO 4, the two benzene rings make a dihedral angle of 86.38 (8)°. In the crystal, inter-molecular C - H?O hydrogen bonds link the mol-ecules to form columns along the a axis. The mol-ecules are also stabilized by a ?-? stacking inter-action, with a centroid-centroid distance of 3.7793 (10) Å between the inversion-related benzene rings. © Fun et al. 2011.
2-(4-Chloro-phen-yl)-2-oxoethyl 3-(trifluoro-meth-yl)benzoate
(2011) Fun, H.-K.; Loh, W.-S.; Garudachari, B.; Isloor, A.M.; Satyanarayan, M.N.
In the title compound, C 16H 10C lF 3O 3, the two benzene rings are slightly twisted from each other, with a dihedral angle of 15.50 (8)° between the planes. In the crystal, inter-molecular C - H?O hydrogen bonds link the mol-ecules into a layer parallel to the bc plane. © Fun et al. 2011.
2-(4-Chloro-phen-yl)-2-oxoethyl benzoate
(2011) Fun, H.-K.; Shahani, T.; Garudachari, B.; Isloor, A.M.; Satyanarayan, M.N.
In the title compound, C 15H 11ClO3, the dihedral angle between the aromatic rings is 84.29 (8) . In the crystal, mol-ecules are linked by weak C - H?? inter-actions. Fun et al. 2011.
2-(4-Chlorophenyl)-2-oxoethyl 4-methylbenzoate
(2011) Fun, H.-K.; Loh, W.-S.; Garudachari, B.; Isloor, A.M.; Satyanarayan, M.N.
In the title compound, C16H13ClO3, the dihedral angle between the benzene rings is 80.74 (8) . In the crystal, C - H?O hydrogen bonds link the mol-ecules to form C(11) chains propagating in [010]. Fun et al. 2011.
2-(4-Fluorophenyl)-2-oxoethyl 2-methoxy-benzoate
(2012) Isloor, A.M.; Garudachari, B.; Satyanarayan, M.N.; Gerber, T.; Hosten, E.; Betz, R.
In the title compound, C 16H 13FO 4, the aromatic rings enclose an angle of 73.68 (6)°. In the crystal, C - H?O and C - H?F contacts connect the mol-ecules into a three-dimensional network. The shortest inter-centroid distance between two aromatic ?-systems is 3.6679 (7) Å and is apparent between the fluorinated phenyl groups.
2-(4-Fluorophenyl)-2-oxoethyl 4-methoxybenzoate
(2011) Fun, H.-K.; Loh, W.-S.; Garudachari, B.; Isloor, A.M.; Satyanarayan, M.N.
In the title compound, C16H13FO4, the dihedral angle between the benzene rings is 84.28 (8)°. In the crystal, C-H?F and C-H?O hydrogen bonds link the molecules to form a three-dimensional network. The crystal structure is consolidated by C-H?? interactions and short F?F contacts [2.7748 (14) Å] also occur..
2-Oxo-2-phenyl-ethyl benzoate
(2011) Fun, H.-K.; Arshad, S.; Garudachari, B.; Isloor, A.M.; Satyanarayan, M.N.
In the title compound, C15H12O3, the terminal phenyl rings make a dihedral angle of 86.09 (9)° with each other. In the crystal, a pair of inter-molecular C - H?O hydrogen bonds link the mol-ecules, forming a dimer with an R2 2(10) ring motif.
4-(4-Methylpiperazin-1-yl)-3-(5-phenyl-1,3,4-oxadiazol-2-yl) -7-(trifluoromethyl)quinoline
(2011) Fun, H.-K.; Arshad, S.; Garudachari, B.; Isloor, A.M.; Satyanarayan, M.N.
In the title compound, C23H20F3N 5O, the piperazine ring adopts a chair conformation. The quinoline ring makes dihedral angles of 56.61 (11), 49.94 (12) and 42.58 (14)° with the piperazine ring, the 1,3,4-oxadiazole ring and the benzene ring, respectively. An intra-molecular C - H?O hydrogen bond generates an S(7) ring motif. In the crystal, molecules are linked into infinite chains along the b axis by C - H?N hydrogen bonds. © Fun et al. 2011.
A Perylene-Triazine-Based Star-Shaped Green Light Emitter for Organic Light Emitting Diodes
(Wiley-VCH Verlag info@wiley-vch.de, 2018) Gupta, R.K.; Ulla, H.; Satyanarayan, M.N.; Ammathnadu Sudhakar, A.A.
A star-shaped molecule with a central electron-deficient triazine ring connected to three electron-rich N-annulated perylene tetraesters was synthesized. Its application as an emissive layer in the fabrication of a sole and host–guest solution processable OLED, exhibiting bright green emission with good electroluminescence efficiency is demonstrated. © 2018 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
All optical nonlinear and switching characteristics of a novel ruthenium complex
(Elsevier B.V., 2014) Manjunatha, K.B.; Dileep, R.; Umesh, G.; Satyanarayan, M.N.; Badekai Ramachandra, B.
Third-order nonlinear optical properties of a novel ruthenium complex (2-thioxo-1,3-dithiole-4,5-dithiolato) triphenylarsenic Ru(III), have been investigated by employing Z-scan and DFWM techniques. The compound shows self-defocusing effect. Its nonlinear refractive index, third-order nonlinear optical susceptibility and the second-order hyperpolarizability are seen to be of the order of 10-9, 10-10 and 10-30 esu respectively. The nonlinear absorption coefficient is of the order of 10 -9 m/W. This material exhibits good optical power limiting capability which is seen to occur due to reverse saturable absorption. Experiments on all-optical switching action indicate that the sample can function as an optical inverter or a NOT gate. © 2014 Elsevier B.V. All rights reserved.
Bithiophene based red light emitting material - Photophysical and DFT studies
(2019) Mohan, M.; Satyanarayan, M.N.; Trivedi, D.R.
Bithiophene based red fluorescent light emitting material BTCN has been synthesized by Schiff base condensation reaction and characterized by standard spectroscopic techniques. The effect of -CN substituted amino pyrazole unit covalently linked to bithiophene moiety enhances the emission intensity in the system. In solid state BTCN exhibits an emission wavelength of 651nm with 170nm FWHM. Cyclic voltammogram shows the HOMO energy level of the BTCN to be -5.59 eV with LUMO around -3.24 eV. DFT optimized geometry of BTCN possesses a high amount of planarity in their structure and TD-DFT estimates the nature of electronic transitions occurring in the system. Overall, BTCN can act as good red light emitting material for organic light emitting applications. � 2019 Author(s).