Graphite alkalis

First reported by Fredenhagen in 1926 F3, F4), the graphite-alkali-metal compounds possess a relative simplicity with respect to other intercalation compounds. To the physicist, their uncomplicated structure and well defined stoichiometry permit reasonable band-structure calculations to be made S2,12) to the chemist, their identity as solid, "infinite radical-anions frequently allows their useful chemical substitution for such homogeneous, molecular-basis reductants as alkali metal-amines and aromatic radical anions N2, B5). 

Band structure cesium auride, 25 240-241 graphite-alkali metal compounds, 23 287 Band theory, for one-dimensional electrical Conductors, 26 237-241 Barbituric acid, 18 187 Barium... 

Table 3 Graphite-alkali metal intercalation compounds...

The catalytic properties of the intercalates depends on the material asso-cated with the graphite. Alkali-metal intercalates favour base-catalysed reactions of hydrocarbons and these were reviewed by Pines and Schaap in 1960. In all cases, the catalytic activity of the graphite intercalate is different from that expected on the basis of the components alone. 

Carbon atoms crystallize in several forms. Graphite and diamond are well known carbon polymorphs. Fullerenes, which were discovered in the 1980 s, have also been well characterized. Carbon materials show a variety of different physical and chemical properties. Because of this the electronic structure of carbon materials has been investigated using a number of different experimental techniques, for example, XPS, UPS and XANES. Theoretical studies of carbon materials have been also performed. However, experimentally observed spectra are not always consistent with theoretical predictions. Recently, in order to understand the various kinds of observed electronic spectra, DV-Xa calculations have been performed on a small cluster model. [1] In the present paper, we report results of DV-Xa calculations performed on the carbon materials graphite, alkali graphite intercalation compounds (GIC), fullerene, and fluorinated fullerenes. 

Matsuzaki, S., M. Taniguchi, M Semo,Polymerization of benzene occluded in graphite-alkali metal intercalation compounds. Synthetic metals, 1986,16(3), 343-348. 

Catalysts for ammonia synthesis prepared from graphite/ alkali metal compositions. (Tokyo University). US 3660028 (1972). 

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