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Open AccessArticle

Tunable Crystal-to-Crystal Phase Transition in a Cadmium Halide Chain Polymer

Institute of Inorganic Chemistry, RWTH Aachen University, Landoltweg 1, 52056 Aachen, Germany
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Polymers 2011, 3(3), 1151-1161; https://doi.org/10.3390/polym3031151
Received: 8 June 2011 / Revised: 11 July 2011 / Accepted: 21 July 2011 / Published: 25 July 2011
(This article belongs to the Special Issue Coordination Polymers)
The chain polymer [{Cd(μ-X)2py2}1] (X = Cl, Br; py = pyridine) undergoes a fully reversible phase transition between a monoclinic low-temperature and an orthorhombic high-temperature phase. The transformation can be directly monitored in single crystals and can be confirmed for the bulk by powder diffraction. The transition temperature can be adjusted by tuning the composition of the mixed-halide phase: Transition temperatures between 175 K up to the decomposition of the material at ca. 350 K are accessible. Elemental analysis, ion chromatography and site occupancy refinements from single-crystal X-ray diffraction agree with respect to the stoichiometric composition of the samples. View Full-Text
Keywords: tunable phase transition; crystal-to-crystal transformation; chain polymer; cadmium compounds; X-ray powder diffraction; single-crystal X-ray diffraction; twinning; ion chromatography tunable phase transition; crystal-to-crystal transformation; chain polymer; cadmium compounds; X-ray powder diffraction; single-crystal X-ray diffraction; twinning; ion chromatography
MDPI and ACS Style

Lamberts, K.; Kalf, I.; Ramadan, A.; Müller, P.; Dronskowski, R.; Englert, U. Tunable Crystal-to-Crystal Phase Transition in a Cadmium Halide Chain Polymer. Polymers 2011, 3, 1151-1161.

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