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The crystal chemistry of solid inorganic nitrides, azides, amides and imides is reviewed systematically. Many of the structures unique to nitrides are illustrated and analyzed. We give full crystallographic data for all compounds with well determined structures and list derived bond valences and Madelung potentials. Similarities to and differences from oxide chemistry are pointed out and general principles relating to structure and bonding in nitrides are elucidated.

Abstract. Polycrystalline tritantalum pentanitride (Ta3Ns) has been prepared from the reaction of TaC15 with ammonia, and its structure has been refined from time-of-flight neutron diffraction data.

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