Other inorganic compounds of silicon

Martens, Synthesis of High-Silica Aluminosilicate Zeolites, Elsevier, Amsterdam, 1987, 390 pp. M. L. Occelu and H. E. Robson (eds.). Zeolite Synthesis, ACS Symposium Series No. 398, 1989, 664 pp. J. Klinowski and P. J. Barrie (eds.) Recent Advances in Zeolite Science, Elsevier, Amsterdam, 1990, 310 pp. G. V. Tsitsishvili, 

Andronikashvili, G. M. Kirov and L. D. Filizova, Natural Zeolites, Ellis Horwood, Chichester, 1990, 274 pp. 

Zeolite Molecular Sieves (Structure, Chemistry, and Uses), Wiley, New York, 1974, 771 pp. K. Seff, Acc. Chem. Res. 9, 121-8 (1976). R. M. Barker, Zeolites and Clay Minerals as Sorbents arui Molecular Sieves, Academic Press, London, 1978, 496 pp. W. Holderich, M. Hesse and F. Naumann, Angew. Chem. Int. Edn. Engl. 27, 226-46 (1988). G. A. Ozin, A. Kupeman and A. Stein, Angew. Chem. Int. Edn. Engl. 28, 359-76 (1989). See also K. B- Yoon and J. K. Kochi, J. Chem. Soc., Chem. Commun., 510-11 (1988) for the novel synthesis of ionic clusters [Na4 ], and P. A. Anderson, R. J. Singer and P. P. Edwards, J. Chem. Soc., Chem. Commun., 914-5 (1991) for the synthesis of [Nas ], [Na ] and [K3 +] by reaction of alkali metal vapours with zeolites. 

8ulfides of Na, Mg, A1 and Fe convert 8i82 into metal thiosilicates, and ethanol yields ethylsilicate 8i(OEt)4 and H28. Volatile 

The most important nitride of Si is Si3N4 this is formed by direct reaction of the elements above 1300° or more economically by heating Si02 and coke in a stream of N2/H2 at 1500°. The compound is of considerable interest as an engineering material since it is almost completely inert chemically, and retains its strength, shape and resistance to corrosion and wear even above 1000°. ° Its great hardness (Mohs 9), high 

---