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.
Full text not available from this repository.Abstract
Preparation and characterization of the fullerenes, C60 and C70, are described in detail, including the design of the generators fabricated locally. The characterization techniques employed are UV-visible, IR, Raman and C-13 NMR spectroscopies, scanning as well as transmission electron microscopy and mass spectrometry. The electron energy level diagram of C60 as well as the one-electron reductions of C60 and C70 leading to various anions are discussed. Electronic absorption spectra of C60- and C60(2-) are reported. Phase transitions from the plastic to the crystalline states of C60 and C70 are examined. Based on a C-13 NMR study in a mixture of nematic liquid crystals, it has been demonstrated that C60 retains its extraordinary symmetry in solution phase as well. Interaction of C60 and C70 with strong electron-donor molecules has been investigated employing cyclic voltammetry. Superconductivity of K(x)C60 has been studied by non-resonant microwave absorption; Na(x)C60 as well as K(c)C70 are shown to be non-superconducting. Doping C60 with iodine does not make it superconducting. Interaction of C60 with SbCl5 and liquid Br2 gives rise to halogenated products.
| Item Type: | Journal Article |
|---|---|
| Additional Information: | Copyright of this article belongs to National Institute of Science Communication and Information Resources. |
| Keywords: | Opposite Diamagnetic Anisotropies;Buckminsterfullerene. |
| Department/Centre: | Division of Chemical Sciences > Inorganic & Physical Chemistry Division of Chemical Sciences > Materials Research Centre Division of Chemical Sciences > Sophisticated Instruments Facility Division of Chemical Sciences > Solid State & Structural Chemistry Unit Division of Physical & Mathematical Sciences > Physics |
| Date Deposited: | 02 May 2011 04:53 |
| Last Modified: | 02 May 2011 04:53 |
| URI: | http://eprints.iisc.ernet.in/id/eprint/37345 |
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