K(2)O(2): The most stable oxide of K

Nandy, Ashis Kumar and Mahadevan, Priya and Sarma, DD (2011) K(2)O(2): The most stable oxide of K. In: Physical Review B: Condensed Matter and Materials Physics, 84 (3).

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Abstract

We have analyzed the stability of various oxides of K and find that K(2)O(2) is the most stable one. The additional stability is traced to the presence of oxygen dimers in K(2)O(2) which interact to form molecular orbitals. Other oxides such as KO(2) and KO(3) which also have dimers/trimers of oxygens are found to be less stable. This is traced to the shorter O-O bonds that one finds in them which gives rise to a significant coulomb repulsion between the electrons on the oxygen atoms making up the dimer/trimer, making them less stable.

Item Type:	Journal Article
Publication:	Physical Review B: Condensed Matter and Materials Physics
Publisher:	The American Physical Society
Additional Information:	Copyright of this article belongs to The American Physical Society.
Department/Centre:	Division of Chemical Sciences > Solid State & Structural Chemistry Unit
Date Deposited:	05 Aug 2011 08:27
Last Modified:	05 Aug 2011 08:27
URI:	http://eprints.iisc.ac.in/id/eprint/39733

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