Fourier transform infrared and Raman spectroscopic study of chromatographically isolated Li@C(sub 60) and Li@C(sub 70)

Article Abstract:

Structural evidence from infrared and Raman spectroscopic studies of chromatographically purified Li@C(sub 60) and Li@C(sub 70) are produced by low-energy ion implantation. Results based on theoretical considerations and comparison of the obtained vibrational spectra, with those of different known fullerene oligomers shows that neither of the chromatographically isolated endohedral species ( Li@C60(sub 70)) corresponds to monmeric nonderivatized molecules.

Ion Implantation, Metal Coating, Engraving (except Jewelry and Silverware), and Allied Services to Manufacturers, Metal coating and allied services, Analysis, Fourier transform infrared spectroscopy

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UV-visible and [super 1]H or [super 13]C NMR spectroscopic studies on the specific interaction between lithium ions and the anion from tropolene or 4-isopropyltropolone (hinokitol) and on the formation of protonated tropolones in acetonitrile or other solvents

Article Abstract:

A combination of the UV-visible and [super 1]H or [super 13]C NMR spectroscopic studies are used to study the specific interactions between the lithium ions and the anion from tropolene or 4-isopropyltropolone (hinokitol). The analysis reveals that such interactions lead to the formation of the protonated tropolones in acetonitrile and many other solvents, as the order of the tropolate ions are altered on addition of the hydrogen ions.

All Other Basic Organic Chemical Manufacturing, Industrial Organic Chemicals, Dimethyl Sulfoxide, Acetonitrile, Nuclear magnetic resonance spectroscopy, Report

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X-ray absorption spectroscopic study on the electronic structure of Li(sub 1-x)CoPO4 electrodes as 4.8 V positive electrodes for rechargeable lithium ion batteries

Article Abstract:

Changes in the electronic structure of olivine Li(sub 1-x)CoPO4, 4.8 V positive electrode materials for lithium ion batteries are investigated using the X-ray absorption spectroscopy (XAS) technique. The results can be interpreted by the idea of the hybridization effect between the Co 3d and O 2p orbital and of the polarization effect introduced by Li ions.

Science & research, Cobalt Compounds, Research, Absorption spectra, Electron configuration, Atomic properties

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