A comparative study of the structural, optical, and electrochemical properties of squarate-based coordination frameworks
Date
2013
Authors
Usov, Pavel M.
Keene, Tony Derek
Alessandro, Deanna
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Journal article
Citation
Australian Journal of Chemistry, 2013; 66(4):429-435
Statement of Responsibility
Pavel M. Usov, Tony D. Keene, and Deanna M. D’Alessandro
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Abstract
Systematic studies of the thermal expansion, optical, and redox properties of a series of six squarate-based frameworks, [MII(C4O4)(H2O)2] (MII = MnII, FeII, CoII, NiII, ZnII, CdII) have revealed that five members of the series exhibit cubic structures in which the squarate ligands are configured in an ‘eclipsed’ phase, while the CdII analogue exhibits a trigonal structure with a ‘staggered’ orientation of the ligands. The ‘eclipsed’ structures are characterised by a positive coefficient of thermal expansion, while the CdII analogue exhibits zero thermal expansion. Ultraviolet-visible-near infrared (UV-Vis-NIR) spectra and electrochemical measurements indicate that electron delocalisation across the dianionic squarate bridge is absent.
School/Discipline
School of Chemistry and Physics
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Journal compilation © CSIRO 2013