ePrints@IIScePrints@IISc Home | About | Browse | Latest Additions | Advanced Search | Contact | Help

Browse by Author

Up a level
Export as [feed] Atom [feed] RSS 1.0 [feed] RSS 2.0
Group by: Item Type | No Grouping
Number of items: 78.

Book Chapter

Ramanathan, KV and Khetrapal, CL and Lobo, NP (2010) Oriented Molecules. [Book Chapter]

Conference Paper

Khetrapal, CL and Suryaprakash, N (1993) Solvent-solute and solute-solute interactions from NMR in nematic phases. In: 14TH INTERNATIONAL LIQUID CRYSTAL CONF PISA, JUN 21-26, 1992 , ITALY.

Khetrapal, CL (1993) NMR spectroscopy of oriented systems: application to weak molecular complexes. In: Facets of Coordination Chemistry, 1993, pp. 111-117.

Journal Article

Vivekanandan, S and Deepak, Vinay HS and Gowda, Nagana GA and Ramanathan, KV and Khetrapal, CL (2002) NMR spectra of mixed liquid crystals of opposite diamagnetic susceptibility anisotropies near critical point under variable angle sample spinning. In: Journal of Molecular Structure, 602-60 . pp. 485-489.

Khetrapal, CL and Ramanathan, KV and Suryaprakash, N and Vivekanandan, S (1998) Natural abundance H-2 NMR spectra of molecules oriented in liquid crystals. In: Journal of Magnetic Resonance, 135 (01). pp. 265-266.

Khetrapal, CL and Suryaprakash, N and Vivekanandan, S (1998) Nematic mixture methods for the determination of chemical shift anisotropy. In: Chemical Physics Letters, 296 (5-6). pp. 537-540.

Liangde, LU and Nagana Gowda, GA and Suryaprakash, N and Khetrapal, CL and Weiss, Richard G (1998) Solute induced liquid crystalline behaviour of a quaternary ammonium salt and its application to structure determination. In: Liquid Crystals, 25 (03). pp. 295-300.

Lu, L and Sharma, N and Gowda, GAN and Khetrapal, CL and Weiss, RG (1997) Enantiotropic nematic phases of quaternary ammonium halide salts based on trioctadecylamine. In: Liquid Crystals, 22 (1). pp. 23-28.

Ramanathan, KV and Khetrapal, CL (1997) NMR in liquid crystals spinning at and near magic angle. In: Molecular Crystals and Liquid Crystals Science and Technology - Section A: Molecular Crystals and Liquid Crystals, 303 (1). pp. 403-413.

Ramanathan, KV and Suryaprakash, N and Khetrapal, CL and Becker, Edwin D and Eichele, Klaus and Wasylishen, Roderick E (1996) $^{13}C$ MAS NMR Spectra ofcis,cis-Mucononitrile in Liquid-Crystalline Media and in the Solid State. Orientation of the Carbon Chemical-Shift Tensors. In: Journal of Magnetic Resonance, Series A, 123 (2). pp. 196-200.

Ramanathan, KV and Suryaprakash, N and Khetrapal, CL and Becker, Edwin D and Eichele, Klaus and Wasylishen, Roderick E (1996) C-13 MAS NMR spectra of cis,cis-mucononitrile in liquid-crystalline media and in the solid state. Orientation of the carbon chemical-shift tensors. In: Journal of Magnetic Resonance - Series A, 123 (2). pp. 196-200.

Deniz, KU and Panicker, L and Parvathanathan, PS and Datta, G and Vivekanandan, S and Ramanathan, KV and Khetrapal, CL (1996) Drug-lipid interactions in the model membrane, DPPC-water: A DSC and proton NMR study. In: Molecular Crystals And Liquid Crystals Science And Technology Section A-Molecular Crystals And Liquid Crystals, 288 . pp. 237-247.

Naganagowda, GA and Vivekanandan, S and Suryaprakash, N and Khetrapal, CL (1996) Multinuclear Magnetic Resonance Studies of Phenylphosphonic Dichloride Oriented in Nematic Phases. In: Journal of Magnetic Resonance, Series A, 118 (1). pp. 33-38.

Khetrapal, CL (1995) Recent Advances and Future Directions of NMR Spectroscopy of Molecules Oriented in Liquid crystals. In: International Journal of Modern Physics B, 9 (18-19). pp. 2573-2583.

Grace, RCR and Suryaprakash, N and Kumar, A and Khetrapal, CL (1994) Application of a modified z-cosy experiment for the analysis of spectra of oriented molecules - the spectrum of cis,cis-mucanonitrile. In: Journal of Magnetic Resonance - Series A, 107 (1). pp. 79-82.

Agarwala, BV and Hingorani, Sunita and Puri, Vanita and Khetrapal, CL and Naganagowda, GA (1994) Physicochemical studies of (o-vanillin thiosemicarbazonato)-nickel(Ii) chelate. In: Transition Metal Chemistry, 19 (1). pp. 25-27.

Sheikh-Ali, BM and Khetrapal, CL and Richard, G (1994) Orientational Order of Liquid-Crystalline 4-Alkyl-N-(p-cyanophenyl)piperidines by 2H and 13C NMR Spectroscopies. In: Journal of Physical Chemistry, 98 (4). 1213 -1216 .

Joshi, Syamasundar and Lakshminarayana, MR and Gowda, Nagana GA and Khetrapal, CL (1993) Carbon-13 NMR studies of lipid mobilization pattern in germinating groundnut (Arachis hypogaea L.) seeds. In: Journal of Agricultural and Food Chemistry, 41 (3). 481-482 .

Agarwala, BV and Puri, V and Naganagowda, GA and Khetrapal, CL (1993) The Exchange Processes in Zinc-Complexes of o-Vanillin Salicyloylhydrazone as studied by 2-Dimensional NMR. In: Journal of the Indian Chemical Society, 70 (11-12). pp. 967-972.

Khetrapal, CL and Gowda, Nagana GA and Suryaprakash, N (1992) Weak molecular complexes as studied by NMR spectroscopy of oriented molecules. In: Spectrochimica Acta Part A: Molecular Spectroscopy, 48 (11-12). pp. 1739-1744.

Suryaprakash, N and Khetrapal, CL and Diehl, P (1992) Quinazoline�iodine interaction as studied by NMR in nematic solutions. In: Magnetic Resonance in Chemistry, 30 (10). pp. 940-943.

Rao, CNR and Pradeep, T and Seshadri, R and Nagarajan, R and Murthy, VN and Subbanna, GN and Souza, FD and Krishnan, N and Nagannagowda, GA and Suryaprakasha, NR and Khetrapal, CL and Bhat, SV (1992) Preparation, Characterization And Properties Of C-60 And C-70 - Spectroscopy, Structure, Anions, Interaction With Electron-Donors And Superconductivity. In: Indian Journal of Chemistry - Section A: Inorganic, Physical, Theoretical and Analytical Chemistry, 31 (5). F5-F16.

Lakshminarayana, MR and Joshi, Syamasundar and Gowda, Nagana GA and Khetrapal, CL (1992) Spatial distribution of oil in groundnut and sunflower seeds by nuclear magnetic resonance imaging. In: Journal of Biosciences, 17 (1). pp. 87-93.

Gowda, Nagana GA and Weissa, RG and Khetrapal, CL (1991) Silver nitrate-acetonitrile and iodine-benzene complexes as studied by NMR in thermotropic liquid crystals. In: Liquid Crystals, 10 (5). pp. 659-664.

Topić, Vikić D and Khetrapal, CL and Christie, GR and Meić, Z and Sandor, P (1991) On the models for deuterium long-range isotope effects in13C NMR spectroscopy. In: Journal of Mathematical Chemistry, 8 (1-3). 185 -192.

Khetrapal, CL and Ramanathan, KV (1991) Sign Of The Order Parameter In Oriented Systems And Its Utility In The Study Of The Dynamic Properties Of Molecules. In: Indian Journal of Chemistry - Section B: Organic and Medicinal Chemistry, 30 (2). pp. 118-121.

Deniz, Usha K and Parvathanathan, PS and Datta, Geeta and Khetrapal, CL and Ramanathan, KV and Suryaprakash, N and Raghotama, S (1990) Nuclear magnetic resonance and thermal studies of drug doped dipalmitoyl phosphatidyl choline-$H_2O$ systems. In: Journal of Biosciences, 15 (3). pp. 117-123.

Nagana Gowda, GA and Suryaprakash, N and Weiss, RG and Khetrapal, CL and Diehl, P (1990) Study of lithium tetrafluoroborate-cyano complexes by NMR in thermotropic liquid crystals. In: Magnetic Resonance in Chemistry, 28 (7). pp. 642-644.

Kumar, Arun BS and Ramanathan, KV and Khetrapal, CL and Opellaz, SJ and Becker, Edwin D (1990) Determination of the sign of the order parameter from MAS spectra of oriented molecules. In: Journal of Magnetic Resonance, 86 (3). pp. 516-525.

Naganagowda, GA and Suryaprakash, N and Khetrapal, CL (1989) Anisotropic contributions of indirect proton-phosphorus couplings in oriented phenylphosphonous dichloride and dibromide. In: Journal of Magnetic Resonance, 84 (1). pp. 166-169.

Diehl, P and Wasser, HR and Nagana, Gowda GA and Suryaprakash, N and Khetrapal, CL (1989) An NMR study of the coexistence of nematic and “induced” smectic phases in mixtures of nematics. In: Chemical Physics Letters, 159 (4). pp. 318-320.

Diehl, P and Wasser, HR and Nagana, Gowda GA and Suryaprakash, N and Khetrapal, CL (1989) Metal-ion-ligand interactions in thermotropic liquid crystals. In: Chemical Physics Letters, 159 (2-3). pp. 199-201.

Datta, G and Hosur, RV and Verma, NC and Khetrapal, CL and Gurnani, S (1989) Mechanism of interaction of the antileukemic drug cytosine arabinoside with aromatic peptides : role of sugar conformation and peptide backbone. In: Physiological Chemistry & Physics & Medical NMR, 21 (4). 279-288 .

Arun Kumar, BS and Ramanathan, KV and Khetrapal, CL (1988) Side-band intensities in the deuterium magnetic resonance spectra of oriented molecules spinning near the magic angle. In: Chemical Physics Letters, 149 (3). pp. 306-309.

Begum, Sameena A and Jain, VK and Ramakumar, S and Khetrapal, CL (1988) A plausible mechanism of thermal decomposition of oxalohydroxamic acid and formation of novel products. In: Journal of Solid State Chemistry, 75 (2). pp. 432-434.

Begum, Sameena A and Jain, VK and Ramakumar, S and Khetrapal, CL (1988) The structure of ammonium oxalohydroxamate - a monopropellant. In: Acta Crystallographica Section C, 44 . pp. 1047-1049.

Kumar, Arun BS and Suryaprakash, N and Ramanathan, KV and Khetrapal, CL (1988) Spectral assignments based on the 13C NMR spectra of mixed liquid crystals of opposite diamagnetic anisotropies. In: Journal of Magnetic Resonance (1969), 76 (2). 256 -263.

Begum, Sameena A and Jain, VK and Khetrapal, CL and Shivaprakash, NC (1987) Structural studies of oxalohydroxamic acid by single crystal x-ray diffraction and spectroscopic methods. In: Journal of Crystallographic and Spectroscopic Research, 17 (4). pp. 545-555.

Khetrapal, CL and Kumar, Arun BS and Ramanathan, KV and Suryaprakash, N (1987) Setting the magic angle using NMR spectra of oriented molecules. In: Journal of Magnetic Resonance, 73 (3). pp. 516-518.

Khetrapal, CL and Raghothama, Srinivasarao and Suryaprakash, N (1987) The rα structure, chemical shift anisotropy, and the abnormal orientation of methyldichlorophosphine from the NMR spectrum. In: Journal of Magnetic Resonance, 71 (1). pp. 140-143.

Arun Kumar, BS and Suryaprakash, N and Ramanathan, KV and Khetrapal, CL (1987) “Near magic angle” sample spinning in NMR spectra of molecules oriented in individual and mixed liquid crystals of opposite diamagnetic anisotropies. In: Chemical Physics Letters, 136 (2). pp. 227-230.

Arumugam, S and Khetrapal, CL (1986) Nuclear magnetic resonance spectra of oriented bicyclic systems containing heteroatom(s):the spectrum of 2-thiocoumarin. In: Canadian Journal of Chemistry / Revue canadienne de chimie, 64 (4). pp. 714-716.

Suryaprakash, N and Khetrapal, CL (1986) The use of $^{13}C$ satellites in the proton NMR spectra of Oriented systems for the Determination of Molecular Structure. In: Magnetic Resonance in Chemistry, 24 (3). pp. 247-250.

Khetrapal, CL and Ramanathan, KV (1985) Cholesteric liquid crystals as solvents in NMR. In: Chemical Physics Letters, 118 (6). pp. 589-590.

Khetrapal, CL (1985) Multiple liquid-crystals and NMR. In: Journal of Chemical Sciences, 95 (1-2). pp. 49-57.

Khetrapal, CL and Ramanathan, KV and Lakshminarayana, MR (1985) NMR studies of molecules dissolved in cholesteric liquid crystals. In: Bulletin of Magnetic Resonance, 7 (2-3). pp. 139-143.

Suryaprakash, N and Khetrapal, CL and Klein, RFX and Horak, V (1985) The Structure of Thialene as Studied by Proton Magnetic Resonance in a Nematic Phase. In: Magnetic Resonance in Chemistry, 23 (12). pp. 1045-1047.

Subburam, R and Sinha, KP and Kunwar, AC and Khetrapal, CL and Davis, M (1984) Absolute Signs of the Order Parameters and the Structures of Benzo[C]bisisothiazoles. In: Molecular Crystals and Liquid Crystals, 112 (1). pp. 285-292.

Suryaprakash, N and Raghothama, S and Khetrapal, CL and Kunwar, AC and Baiwir, M and Llabres, G (1984) Solvent effects on the structure of benzo[b]selenophene oriented in liquid crystals. In: Journal of Organometallic Chemistry, 277 (3). pp. 359-363.

Suryaprakash, N and Kunwar, AC and Khetrapal, CL (1984) The structure and conformation of 3-methylphosphacymantrene. In: Journal of Organometallic Chemistry, 275 (1). pp. 53-56.

Arumugam, S and Kunwar, AC and Khetrapal, CL (1984) NMR Investigations on Di- and Tri-Azanaphthalenes Oriented in Liquid Crystals. In: Molecular Crystals and Liquid Crystals, 109 (2-4). pp. 263-270.

Suryaprakash, N and Kunwar, AC and Khetrapal, CL (1984) Solvent effects on the structure of N-methylpyrrole as studied by nmr in nematic solvents. In: Chemical Physics Letters, 107 (3). pp. 333-336.

Arumugam, S and Kunwar, AC and Khetrapal, CL (1984) The NMR spectrum of anthranil oriented in a nematic phase. In: Journal of Molecular Structure, 117 (1-2). pp. 157-159.

Suryaprakash, N and Ramanathan, KV and Datta, Geeta and Gurnani, S and Khetrapal, CL (1984) Importance of sugar ring geometry in protein-nucleoside interactions. In: Indian Journal of Chemistry, Section B: Organic Chemistry Including Medicinal Chemistry, 23 (12). pp. 1145-1147.

Arumugam, S and Kunwar, AC and Khetrapal, CL (1984) Structure of dibenzofuran and dibenzothiophene: Proton NMR study in nematic phases. In: Organic Magnetic Resonance, 22 (9). pp. 547-549.

Khetrapal, CL and Kunwar, AC and Arumugam, S (1984) The Use of Two Nematic Solvents in the Determination of Molecular Structure of Systems Providing Deceptively Simple Spectra. In: Organic magnetic resonance, 22 (11). pp. 707-709.

Surya Prakash, N and Kunwar, AC and Khetrapal, CL (1983) On The Applications Of Mixed Liquid Crystals Of Opposite Diamagnetic Anisotropies To Organometallic Systems; Nmr Spectra Of Oriented Phenylselenyl Bromide. In: Journal of Organometallic Chemistry, 252 (3). pp. 301-304.

Suryaprakash, N and Kunwar, AC and Khetrapal, CL (1983) The influence of bond-polarisation on the molecular structures of halo-fluorobenzenes. In: Journal of Molecular Structure, 101 (2). pp. 121-125.

Sinha, KP and Subburam, R and Khetrapal, CL (1983) Landau-type theory applied to mixtures of liquid crystals of opposite diamagnetic anisotropies. In: Chemical Physics Letters, 96 (4). pp. 472-474.

Sinha, KP and Subburam, R and Khetrapal, CL (1983) A Theory of Concentration Dependent Switching Transition in Mixed Liquid Crystals of Opposite Diamagnetic Anisotropies. In: Molecular Crystals and Liquid Crystals, 94 (3). pp. 375-382.

Datta, Geeta and Gurnani, S and Suryaprakash, N and Ramanathan, KV and Khetrapal, CL (1982) An NMR study of the interaction of cytosine arabinoside and lysozyme. In: FEBS Letters, 148 (2). 276 -280.

Khetrapal, CL and Kunwart, AC (1982) NMR spectra of oriented biologically important molecules - The structure of and the internal rotation in N,N'-dimethyluracil. In: Journal of Physical Chemistry B, The, 86 (24). pp. 4815-7817.

Suryaprakash, N and Arumugam, S and Kunwar, AC and Khetrapal, CL (1982) NMR spectrum of pyridine-N-oxide in a thermotropic nematic phase. In: Journal of Magnetic Resonance, 47 (3). pp. 507-509.

Khetrapal, CL and Kunwar, AC (1982) Nuclear Magnetic-Resonance Spectra Of Oriented Biologically Important Molecules - The Structure Of And The Internal-Rotation In N,N-Dimethyluracil. In: Journal of Physical Chemistry B, 86 (4). pp. 4815-4817.

Khetrapal, CL and Kunwar, AC (1981) Proton NMR spectra including 13C- and 77Se-satellites in organoselenium compounds oriented in the nematic phase : Part 1. The spectrum of 2,1,3-benzoselenadiazole. In: Journal of Molecular Structure, 74 (2). pp. 343-345.

Khetrapal, CL and Kunwar, AC (1981) Average Orientation of Molecules Dissolved in Nematic Liquid Crystals of Opposite Diamagnetic Anisotropies. In: Molecular Crystals and Liquid Crystals, 72 (1). 13 - 16.

Khetrapal, CL (1981) Application of NMR of oriented systems in biochemistry and biophysics. In: International Journal of Quantum Chemistry, 20 (2). pp. 485-494.

Arumugam, S and Kunwar, AC and Khetrapal, CL (1981) Molecular structure and the indirect spin-spin coupling constants in azulene - a proton NMR study in the nematic phase. In: Organic Magnetic Resonance, 17 (4). pp. 257-259.

Lakshminarayana, MR and Seetharam, A and Ramanathan, KV and Khetrapal, CL (1980) NMR study of the oil build-up in sunflower seeds. In: Current Science, 49 . pp. 308-309.

Khetrapal, CL and Kumar, Anil and Kunwar, AC and Mathias, PC and Ramanathan, KV (1980) Two-dimensional NMR spectra of oriented molecules. In: Journal of Magnetic Resonance, 37 (2). pp. 349-351.

Khetrapal, CL and Kunwar, AC and Mathey, F (1979) The structure of phosphacymantrene. In: Journal of Organometallic Chemistry, 181 (2). pp. 349-353.

Khetrapal, CL and Kunwar, AC and Sinha, KP (1979) A new method for the determination of covalent radii. In: Chemical Physics Letters, 67 (2-3). pp. 444-445.

Ramprasad, S and Kunwart, AC and Khetrapal, CL (1979) NMR Of oriented monosubstituted amides-cis and trans n-methyl formamide. In: International Journal of Peptide & Protein Research, 14 (2). pp. 123-129.

Khetrapal, CL and Kunwart, AC and Patankar, AV (1979) NMR of bicyclic diazines oriented in a lyotropic mesophase. In: Molecular Crystals & Liquid Crystals, 51 (3-4). pp. 247-252.

Khetrapal, CL and Kunwart, AC and Mathey, F (1979) The structure of phosphacymantrene. In: Journal of Organometallic Chemistry, 181 (2). pp. 349-353.

Ramprasad, S and Kelleherals, HP and Kunwar, AC and Khetrapal, CL (1976) Amide Planarity As Studied By Nmr Of Oriented Molecules - Spectrum Of N-Methylacetamide. In: MOLECULAR CRYSTALS AND LIQUID CRYSTALS, 34 (1). pp. 19-23.

Editorials/Short Communications

Khetrapal, CL and Raghothama, S and Kunwar, AC and Suryaprakash, N (1988) 13C-N.M.R. studies of discotics. In: Liquid Crystals, 3 (3). pp. 413-415.

Begum, Sameena A and Jain, VK and Ramakumar, S and Khetrapal, CL (1988) Structure of 1,2,4-oxadiazolidine-3,5-dione monohydrate. In: Acta Crystallographica Section C, 44 . pp. 195-196.

This list was generated on Tue Oct 21 18:26:22 2014 IST.