Research Papers (Prof. C.N.R. Rao): Recent submissions

Now showing items 181-200 of 877

Addition Of Amines And Halogens To Fullerenes C60 and C70

Seshadri, Ram; Govindaraj, A; Nagarajan, R; Pradeep, T; Rao, C N R (Pergamon-Elsevier Science Ltd, 1992-03-07)

In solution phase, aliphatic amines add on to fullerenes; vapourization of graphite in presence of methylamine gives nitrogeneous C60 derivatives. Reactions of C60 with SbCl5 and liquid Br2 yield halogen adducts.
Synthesis, characterization and acid-base catalytic properties of ammonium-containing tin(ll) phosphates: [NH4][Sn4P3O12] and [NH4] [SnPO4]

Ayyappan, S; Chang, J S; Stock, N; Hatfield, R; Rao, C N R; Cheetham, A K (Elsevier Science Ltd, 2000-02)

Two new tin(II) phosphate materials, three-dimensional [NH4][Sn4(PO4)3] (compound I) and layered [NH4][SnPO4] (compound II), have been synthesized hydrothermally and their structures determined by single crystal X-ray ...
An infrared and Raman study of the phase transitions and the torsional barrier in hydrazonium sulfate, N2H6SO4

Varma, Vijay; Rao, C N R (Elsevier Science BV, 1992-04-01)

Infrared and Raman spectra of N2H6SO4 have been investigated through the phase transitions at 230 K (III-II) and 483 K (II-I) and assignments made to the various vibrational modes. The assignments have been confirmed by ...
Spin-glass behaviour in Pr0.7Ca0.3CoO3 and Nd0.7Ca0.3CoO3

Kundu, Asish K; Nordblad, P; Rao, C N R (Elsevier Inc, 2006-03)

With a view to investigate the effect of small size of A-site cations on the magnetic properties of the rare earth cobaltates, Ln1−xAxCoO3 (Ln=rare earth, A=alkaline earth), we have investigated Pr0.7Ca0.3CoO3 and ...
Building Open-Framework Metal Phosphates from Amine Phosphates and a Monomeric Four-Membered Ring Phosphate

Rao, C N R; Natarajan, S; Neeraj, S (Academic Press Inc, 2000-06)

Several amine phosphates have been synthesized and their structures elucidated by single crystal X-ray diffraction. The amine phosphates, on reaction with metal ions, give rise to a large variety of metal phosphate structures ...
Molecular dynamics simulation of clathrates: noble gases in the cages of β-hydroquinonestar, open

Santikary, P; Yashonath, S; Rao, C N R (Elsevier Science BV, 1992-05-08)

Molecular dynamics calculations of Ne and Ar in the cages of β-hydroquinone have been carried out. Radial distribution of the guest atoms, energy distribution functions, mean square displacements and power spectra have ...
Superconducting properties of Tl1−yPbyCaSr2Cu2O7 : Role of Pb And Oxygen Stoichiometry

Vijayaraghavan, R; Rao, C N R (Pergamon-Elsevier Science Ltd, 1992-07)

In the Tl1-yPbyCaSr2Cu2O7 system, monophasic superconducting compositions are form in t, range 0.25 < y < 0.60 and the minimum Pb content required to stabilize the tetragonal 1122 phase is about 25%. Maximum T(c) is found ...
A layered aluminum phosphate, [C2N2H10] [Al2(OH)2H2O(PO4)2]H2O, by the amine phosphate route

Choudhury, Amitava; Natarajan, Srinivasan; Rao, C N R (Elsevier Science Ltd, 2000-02)

A layered aluminum phosphate, I, [C2N2H10][Al2(OH)2H2O(PO4)2]H2O, with Al:P ratio of 1:1 has been prepared using a novel synthetic route wherein the amine phosphate, [C2N2H10][HPO4], was reacted with Al3+ ions under ...
Ferroelectricity in Bi26-xMxO40-δ (M = Al and Ga) with the γ-Bi2O3 structure

Mangalam, R V K; Ranjith, R; Iyo, A; Sundaresan, A; Krupanidhi, S B; Rao, C N R (Elsevier Ltd, 2006-10)

We report on the dielectric properties of bismuth aluminate and gallate with Bi:Al(Ga) ratio of 1:1 and 12:1 prepared at high temperature and ambient pressure. These compounds crystallize in a noncentrosymmetric body-centered ...
Photophysical properties of the fullerenes, C60 and C70

Palit, D K; Sapre, A V; Mittal, J P; Rao, C N R (Elsevier Science BV, 1992-07-10)

Photophysical properties of the singlet and triplet states of the fullerenes, C60 and C70, have been investigated in toluene, benzene, hexane and ethanol solutions by pico- and nano-second laser flash photolysis techniques. ...
Macroporous oxide materials with three-dimensionally interconnected pores

Gundiah, Gautam; Rao, C N R (Editions Scientifiques Medicales Elsevier, 2000-12)

Ordered mesoscale hollow spheres (1000 nm diameter) of binary oxides such as TiO2 and ZrO2 as well as of ternary oxides such as ferroelectric PbTiO3 and Pb(ZrTi)O-3 have been prepared by templating against colloidal crystals ...
Postscript - Rietveld Refinement Of The Structure Of Ceocl Formed In Pd/Ceo2 Catalyst - Notes On The Existence Of A Stabilized Tetragonal Phase Of La2o3 In La-Pd-O System

Row, T N Guru; Ganguli, A K; Rangavittal, N; Seshadri, Ram; Rao, C N R (Academic Press Inc, 1992-08)
Use of the liquid-liquid interface for generating ultra-thin nanocrystalline films of metals, chalcogenides and oxides

Rao, C N R; Kulkarn, G U; Agrawal, Ved Varun; Gautam, Ujjal K; Ghosh, Moumita; Tumkurkar, Usha (Elsevier Inc, 2005-09-15)

The air–water interface has traditionally been employed to prepare particle assemblies and films of metals and semiconductors. The interface between water and an organic liquid, however, has not been investigated sufficiently ...
Pressure-induced orientational ordering in C60 crystals as revealed by Raman spectroscopy

Narayana, Chandrabhas; Shashikala, M N; Muthu, D V S; Sood, A K; Rao, C N R (Elsevier Science BV, 1992-09-11)

Pressure-induced molecular orientational ordering in single crystals of C60 has been studied by Raman spectroscopy. The strongest intramolecular mode attributed to the double-bond stretching "pentagonal pinch" vibration ...
Sensitive dependence of the hydrogen-bonded assemblies in cyanuric acid-4,4' -bipyridyl adducts on the solvent and the structure of the parent acid

Ranganathan, A; Pedireddi, V R; Sanjayan, G; Ganesh, K N; Rao, C N R (Elsevier Science BV, 2000-04-11)

Cyanuric acid (CA) forms a 2:1 hydrogen-bonded adduct with 4,4'-bipyridyl (BP) when co-crystallized from a methanol solution and a 1:1 adduct from an aqueous solution. The sheet structure of the 2:1 adduct involves cyclic ...
Structure and superconducting properties of Tl1-yPbyY1-xCaxSr2Cu2O7 Dependence of Tc on hole concentration

Vijayaraghavan, R; Rangavittal, N; Kulkarni, G U; Grantscharova, Emilia; Row, T N Guru; Rao, C N R (Elsevier Science BV, 1991-08-15)

Structure and superconducting properties of Tl1-yPb(y)Y1-xCa(x)Sr2Cu2O7 (y = 0.0, 0.1, 0.25 and 0.5), derived from the parent insulator TlYSr2Cu2O7, have been investigated for different values of x. XANES studies show Pb ...
Investigations of the structure and superconducting properties of the Pr(Ca)-Ba(La)-Cu-O system : Pr1-xCaxBa2Cu3O7-δ, PrBa2-xLaxCu3O7-δ and Pr1-xCaxBaLaCu3O7-δ

Nagarajan, R; Pavate, Vikram; Rao, C N R (Pergamon-Elsevier Science Ltd, 1992)

Prompted by a literature report that thin films of Pr0.5Ca0.5Ba2Cu3O7-δ are superconducting, the structure and bulk properties of orthorhombic Pr1-xCaxBa2Cu3O7-δ and tetragonal PrBa2-xLaxCu3O7-δ have been investigated. ...
Dependence of the Strength of Interaction of Carbon Monoxide with Transition Metal Clusters on the Cluster Size

Santra, A K; Ghosh, Samrat; Rao, C N R (American Chemical Society, 1994-11)

The interaction of CO with Cu, Pd, and Ni at different coverages of the metals on solid substrates has been investigated by He II and core-level spectroscopies, after the nature of variation of the metal core-level binding ...
Infrared and Raman spectroscopic investigations of methylammonium haloantimonates(III), [N(CH3)4−nHn]3 Sb2X9 (n = 0–3, X = Cl or Br), through their phase transitions

Varma, Vijay; Bhattacharjee, Ramendu; Vasan, H N; Rao, C N R (Pergamon-Elsevier Science Ltd, 1992-11)

Infrared and Raman spectra of methylammonium chloroantimonates(III) of the general formula [N(CH3)4-nHn]3Sb2Cl9 With n=0, 1, 2 and 3 and of the methylammonium bromoantimonate(III), (CH3NH3)3Sb2Br9, have been investigated ...
29Si NMR chemical shifts in silicates

Prabakar, S; Rao, K J; Rao, C N R (Elsevier Science BV, 1991-08-30)

29Si chemical shifts in a wide variety of silicates in crystalline, glassy and gel states have been related to a parameter, P, which takes into account the electronegativity and the structural description of the silicate ...

Now showing items 181-200 of 877

Search DSpace

Advanced Search

Browse

All of DSpace
This Collection
- By Issue Date
- Authors
- Titles
- Subjects

Recently added

Research Papers (Prof. C.N.R. Rao): Recent submissions

Search DSpace

Browse

All of DSpace

This Collection

My Account