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Dibutylammonium Hydrogen Oxalate: An Above-Room-Temperature Order–Disorder Phase Transition Molecular Material
| Content Provider | Semantic Scholar |
|---|---|
| Author | Khan, Tariq Pervaiz Tang, Yuanyuan Sun, Zhihua Zhang, Shuquan Asghar, Muhammad Adnan Chen, Tianliang Zhao, Sangen Luo, Junhua |
| Copyright Year | 2015 |
| Abstract | An above-room-temperature new phase transition molecular material, dibutylammonium hydrogen oxalate (1), has been synthesized, which undergoes a reversible phase transition at 321.6 K. Differential scanning calorimetry (DSC) measurements confirm its reversible phase transition with a large heat hysteresis of ∼10 K. The dielectric constants of 1 exhibit an obvious step-like anomaly, showing the high and low dielectric constant states at high and room-temperature phases, respectively, which reveal that 1 might be considered a potential switchable dielectric material. Variable-temperature single crystal X-ray diffraction analyses disclose that the origin of this phase transition is greatly attributed to the coupling of the order–disorder change and reorientation of the dibutylammonium cation; that is, the frozen ordering of ethyl group in butyl moiety triggered by the decreasing temperature forces the reorientation of cation, thus resulting in the structural phase transition. |
| Starting Page | 5263 |
| Ending Page | 5268 |
| Page Count | 6 |
| File Format | PDF HTM / HTML |
| DOI | 10.1021/acs.cgd.5b00758 |
| Volume Number | 15 |
| Alternate Webpage(s) | http://www.fjirsm.cas.cn/research/R1/ljh/yjcg/200907/W020171212398543616584.pdf |
| Alternate Webpage(s) | https://doi.org/10.1021/acs.cgd.5b00758 |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
