Journal
CRYSTAL GROWTH & DESIGN
Volume 14, Issue 8, Pages 3903-3909Publisher
AMER CHEMICAL SOC
DOI: 10.1021/cg5004676
Keywords
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Funding
- NSFC [21290173, 21121061, 21301198, 21361002]
- 973 Project [2012CB821706]
- NSF of Guangdong [S2012030006240]
- 100 Talents Program of SYSU
- China Postdoctoral Science Foundation [2013M531888]
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Through in situ variable-temperature single-crystal X-ray diffraction analysis, a solid solid structural phase transition induced by the successive displacements of the [NMe4](+) guest and a subsequent abrupt order disorder transform for both the cationic guest and the cage-like framework was tracked in four perovskite-like bimetallic azido coordination polymers: (NMe4)(2)[B'center dot B ''(N-3)(6)] (B' = Cr3+, Fe3+; B '' = Na+, K+) Such structural transition was also confirmed by differential scanning calorimeter measurement, variable-temperature powder X-ray diffraction analysis, and variable-temperature dielectric permittivity measurement, as well as molecular dynamics simulation. Conclusively, these compounds provide a good host guest model for understanding and modulating the thermal motion behavior of the [NMe4](+) guest in various confined spaces constructed by the perovskite-like azido frameworks.
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