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Solid-solid phase transitions of organic-inorganic perovskite hybrids  

Huh, Young-Duk (Department of Chemistry, Dankook University)
Kim, Ji-Hyun (Department of Chemistry, Dankook University)
Publication Information
Journal of the Korean Crystal Growth and Crystal Technology / v.15, no.2, 2005 , pp. 86-91 More about this Journal
Abstract
The layered structure of organic-inorganic perovskite hybrids, $(C_nH_{2n+1}NH_3)_2CuC1_4$ (n = 6, 8, 10, 12) have synthesized. In $(C_nH_{2n+1}NH_3)_2CuC1_4$ compounds, the long-chain protonated alkylammonium ions as tilted bilayer type are inserted into perovskite-type layers of corner sharing $CuCl_6$ octahedron. Three solid phases have been characterized in the perovskite layered compound $(C_nH_{2n+1}NH_3)_2CuC1_4$ using HT-XRD and DSC. The $(C_nH_{2n+1}NH_3)_2CuC1_4$ compounds shows solid-solid phase transitions with stepwise increasing of the layer distance. Three different structures are explained by the conformational change of the long-chain protonated alkylammonium ions.
Keywords
Perovskite structure; Organic-inorganic hybrids; Solid-solid phase transition;
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