Acta Crystallographica Section B

Structural Science

Volume 55, Part 5 (October 1999)

short communications


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Acta Cryst. (1999). B55, 807-809    [ doi:10.1107/S0108768199003936 ]

Structural metrics relationships in covalently bonded organic azides

L. Tchertanov

Abstract: Geometrical parameters of covalently bonded organic azides have been analysed using X-ray structural data retrieved from the Cambridge Structural Database. The RNNN fragment geometry shows some important general features: (i) a preference for a trans Cs configuration; (ii) bending of the N-N-N unit; (iii) substantially different N-N bond lengths in the azide group. Electron-density redistribution within the covalently bonded azide group (relative to that in the isolated azide anion) promotes the capacity of the terminal azide N atom to form hydrogen bonds.

Keywords: Azides; Cambridge Structural Database.

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