Abstract Organic-inorganic hybrid materials were attracted most interests due to their potential applications in phase transition and photoelectric fields. Within this context, a spherical molecule 1, 5-diazabicyclo[3,2,1]octane (3,2,1-dabco) was used to react with PbBr2 in concentrated HBr acid and led to a discrete organic inorganic hybrid compound [(3,2,1-dabco)2PbBr6] (1). Thermodynamic DSC analyses and dielectric measurement of 1 showed an apparently reversible phase transition at about 427 K. The variable temperature X-ray single crystal diffraction demonstrated compound 1 underwent an order-disorder transition from orthorhombic to cubic systems at room and high temperatures.

中文翻译：

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球形分子中的可逆相变和介电异常 [(3,2,1-dabco)2PbBr6]

摘要 有机-无机杂化材料因其在相变和光电领域的潜在应用而备受关注。在此背景下，球形分子 1, 5-二氮杂双环 [3,2,1] 辛烷 (3,2,1-dabco) 用于与浓 HBr 酸中的 PbBr2 反应，生成离散的有机无机杂化化合物 [( 3,2,1-dabco)2PbBr6] (1)。1 的热力学 DSC 分析和介电测量显示在约 427 K 处明显可逆相变。变温 X 射线单晶衍射表明化合物 1 在室温和高温下经历了从正交系统到立方系统的有序-无序转变。