A compound having a space spinel structure and the formula Si3-x Cx N4 wherein 0x1. An example of the compound is spinel silicon carbonitride. The compound of the invention may be made by providing a silicon carbo-diimide compound and subjecting the compound to elevated temperature and pressure conditions.

 
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> Process for the preparation of doped pentasil-type zeolite using doped seeds

> Polyreactions in non-aqueous miniemulsions
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