Structural phase transition in catena-(1,2,3,6-tetrahydropyridine tris(mu(2)-chloro)-cadmium(II))

作者：Qin Li Li; Ye Heng Yun^*; Wang Dong Yan

来源：Inorganic Chemistry Communications, 2014, 46: 47-50.

DOI：10.1016/j.inoche.2014.05.005

• Phase transition
• Order-disorder
• Dielectric
• Perovskite-type structure

The title compound, catena-(1,2,3,6-tetrahydropyridine tris(mu(2)-chloro)-cadmium(II)), has a hexagonal perovskite-type structure with formula AMX(3). It undergoes a reversible dielectric transition at about 197 K. The transition was accompanied by significant dielectric anomaly, and was confirmed by DSC measurements. The variable-temperature single crystal X-ray diffraction analysis reveals that the transition is a process of the doubling of the cell volume from P2(1)/m to P2(1)/a. The transition is caused by the order disorder change of the 1,2,3,6-tetrahydropyridinium cation.

• 出版日期2014-8
• 单位东南大学