Nitrenes (R - N : )
(1) The nitrogen analogous of carbenes are known as nitrenes.
(2) There is possibility of two spin structure for nitrenes depending on whether the two non-bonding electrons (the normal nitrogen lone pair remains paired) have their spins paired or parallel.
![702_nitrene1.png](https://www.expertsmind.com/../CMSImages/702_nitrene1.png)
(3) In general nitrenes obey Hunds rule and the ground state triplet with two degenerate sp-orbitals containing a single electron each.
![2438_nitrene.png](https://www.expertsmind.com/../CMSImages/2438_nitrene.png)
(4) Nitrenes can be created, in situ, by the given methods,
(i) By action of Br2 in presence of a base on a 10 amide (Hofmann-bromamide reaction),
![2487_nitrene2.png](https://www.expertsmind.com/../CMSImages/2487_nitrene2.png)
(ii) By decomposition of azides in presence of heat or light.
![890_nitrene3.png](https://www.expertsmind.com/../CMSImages/890_nitrene3.png)
(iii) Unsubstituted nitrene
can be obtained by photolysis of (or by passing electric discharge through) NH3, N2H2 or N3H.
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