Group 16 elements sulfur nitrides

The first two sections of this chapter are the usual ones on (1) the discovery and isolation of the elements and (2) the application of the network to group chemistry. The third section, necessitated by the great ability of sulfur to catenate, concentrates on the allotropes and compounds that involve element-to-element bonds. Next is a short section on the relatively new and potentially useful sulfur nitrides. The reactions and compounds of practical importance in the fourth section include sodium-sulfur batteries, the photoelectric properties of selenium and tellurium, and the most important commercial chemical in the world, sulfuric acid. The selected topic in depth is the production, effects, and possible control of acid rain. 

Nitrogen can also form a variety of sulfur and phosphorus nitrides. These, however, are characterized by dir—piT bonds as opposed to the pir—pir variety in C=N, N=0, N=N, N N bonds. So we move on now to see how our recently added eighth component of the network (a consideration of the dir—pTr bonding that involves elements of the second and third periods) applies to Group 5A chemistry. 

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