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Inorg Chem. 2013 Feb 18;52(4):2078-85. doi: 10.1021/ic302484x. Epub 2013 Jan 25.

Structural characterization and physical properties of the new transition metal oxyselenide La2O2ZnSe2.

Inorganic chemistry

Andrew J Tuxworth, Emma E McCabe, David G Free, Stewart J Clark, John S O Evans

Affiliations

  1. Department of Chemistry, University Science Site, Durham University, South Road, Durham, DH1 3LE, United Kingdom.

PMID: 23350805 DOI: 10.1021/ic302484x

Abstract

The quaternary transition metal oxyselenide La(2)O(2)ZnSe(2) has been shown to adopt a ZrCuSiAs-related structure with Zn(2+) cations in a new ordered arrangement within the [ZnSe(2)](2-) layers. This cation-ordered structure can be derived and described using the symmetry-adapted distortion mode approach. La(2)O(2)ZnSe(2) is an direct gap semiconductor with an experimental optical band gap of 3.4(2) eV, consistent with electronic structure calculations.

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