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Acta Crystallogr C. 2005 Feb;61(Pt 2):i17-9. Epub 2005 Jan 15.

Two alkali metal chlorites, LiClO2 and KClO2.

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Nikolaev Institute of Inorganic Chemistry, SB Russian Academy of Sciences, Academition Lavrentiev Avenue 3, Novosibirsk 90, 630090 Russia.


The structures of tetragonal (P4(2)/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 -4 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.

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