Acta Crystallographica Section C

Crystal Structure Communications

Volume 61, Part 2 (February 2005)


inorganic compounds



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Acta Cryst. (2005). C61, i17-i19    [doi:10.1107/S0108270104032482]

Two alkali metal chlorites, LiClO2 and KClO2

A. I. Smolentsev and D. Yu. Naumov

Abstract: The structures of tetragonal (P42/ncm) lithium chlorite, LiClO2, and orthorhombic (Cmcm) potassium chlorite, KClO2, have been determined by single-crystal X-ray analyses. In LiClO2, the Li atom is at a site of \overline4 symmetry, while in KClO2, the K atom is at a site with 2/m symmetry. In both compounds, the unique Cl and O atoms are at sites with mm and m symmetry, respectively. The structure of LiClO2 consists of layers of Li+ cations coordinated by ClO2- anions. In contrast, the structure of KClO2 contains pseudo-layers of K+ and ClO2- ions containing four short K-O distances. The Li+ and K+ cations are surrounded by four and eight chlorite O atoms in tetrahedral and distorted cubic coordination environments, respectively.

Formula: LiClO2 and KClO2


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