The crystal structure of ammonium perchlorate-NH4ClO4

Venkatesan, K. (1957) The crystal structure of ammonium perchlorate-NH4ClO4 Proceedings of the Indian Academy of Sciences, Section A, 46 (2). pp. 134-142. ISSN 0370-0089

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The crystal structure of ammonium perchlorate has been redetermined. The orthorhombic cell with space-group Pnma has four molecules in a unit cell of dimensions a=9.13 Å, b=5.79 Å and c=7 .47Å. The values of the atomic co-ordinates have been refined by double Fourier-series methods and the final atomic positions determined are accurate to 0.02 Å. The positions of the hydrogen atoms have been obtained by the use of difference projection along the b-axis. In the structure each chlorine is surrounded tetrahedrally by four oxygen atoms at a mean distance of 1.46 Å. Each ammonium ion is surrounded by twelve oxygen atoms at distances varying from 2.89 to 3.39 Å. The four hydrogens surrounding each nitrogen form weak N-H ÅÅO bridges with the nearest oxygen atoms, Tables are given for various atomic co-ordinates and interatomic distances.

Item Type:Article
Source:Copyright of this article belongs to Indian Academy of Sciences.
ID Code:66657
Deposited On:27 Oct 2011 03:59
Last Modified:18 May 2016 14:06

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