Distinct phase transitions and dielectric anomalies in two 4-methylanilinium salts  

作　　者：ZHANG Wen XU RuiJun 

机构地区：[1]Ordered Matter Science Research Center, Southeast University, Nanjing 211189, China

出　　处：《Science China Chemistry》2012年第2期201-207,共7页中国科学（化学英文版）

基　　金：supported by the National Natural Science Foundation of China (21071030);Natural Science Foundation of Jiangsu Province(BK2010425)

摘　　要：Solid-state phase transitions of 4-methylanilinium perchlorate （4-CH3C6H4NH3.C104, 1） and tetrafluoroborate （4-CH3C6H4- NH3-BF4, 2） were investigated with variable-temperature X-ray single-crystal structure analysis and thermal studies. Both 1 and 2 undergo first-order phase transitions and exhibit distinct dielectric anomalies at 385 and 247 K, respectively.Solid-state phase transitions of 4-methylanilinium perchlorate (4-CH 3 C 6 H 4 NH 3 ·ClO 4 , 1) and tetrafluoroborate (4-CH 3 C 6 H 4 - NH 3 ·BF 4 , 2) were investigated with variable-temperature X-ray single-crystal structure analysis and thermal studies. Both 1 and 2 undergo first-order phase transitions and exhibit distinct dielectric anomalies at 385 and 247 K, respectively.

关 键 词：organic-inorganic hybrid compounds DIELECTRICITY phase transition crystal structure switchable molecular dielectrics 

分 类 号：O441.4[理学—电磁学] TG111.5[理学—物理]