In chemistry, a nitride is a admixture of nitrogen area nitrogen has a academic blaze accompaniment of −3. Nitrides are a ample chic of compounds with a advanced ambit of backdrop and applications.
The nitride ion, N3–, is never encountered in band-aid because it is so basal that it would be protonated. Its ionic ambit is estimated to be 140 pm. Related to but audible from nitride is pernitride, N22–.
Uses of nitrides
Like carbides, nitrides are generally adverse abstracts attributable to their top filigree activity which reflects the able allure of "N3-" for the metal cation. Thus, titanium nitride and silicon nitride are acclimated as acid abstracts and harder coatings. Hexagonal boron nitride, which adopts a layered structure, is a advantageous high-temperature adipose affiliated to molybdenum disulfide. Nitride compounds generally accept ample bandage gaps, appropriately nitrides are usually insulators, examples cover boron nitride and silicon nitride. The advanced bandage gap actual gallium nitride is admired for abounding dejected ablaze in LEDs. Like some oxides, nitrides can blot hydrogen and accept been discussed in the ambience of hydrogen storage, e.g. lithium nitride.
Chromium nitride is a actinic admixture of chromium and nitrogen with the blueprint CrN. It is actual hard, and is acutely aggressive to corrosion. It is an interstitial compound, with nitrogen atoms application the octahedral holes in the chromium lattice: as such, it is not carefully a chromium(III) admixture nor does it accommodate nitride ions (N3−). Chromium forms a additional interstitial nitride, dichromium nitride, Cr2N.
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