A comparison of thermal characteristics of Cu(II) carboxylates and their complexes with pyridine
作者:S. Petriček、M. Petrič
DOI:10.1016/s0040-6031(97)00077-4
日期:1997.10
2 ( R CO 2 ) 4 and Cu 2 ( R CO 2 ) 4 py 2 ( R = CH 3 (CH 2 ) n −2 ; n = 7, 8, 9, 10, 12) were done to compare their thermal behavior and establish the influence of pyridine in complexes on phase transition from solid state to liquid crystalline phase. Transitions from a crystalline to a liquid crystalline phase were observed for all Cu 2 ( R CO 2 ) 4 compounds, but only for pyridine complexes of Cu(II)
摘要 Cu 2 ( R CO 2 ) 4 和Cu 2 ( R CO 2 ) 4 py 2 ( R = CH 3 (CH 2 ) n -2 ; n = 7, 8, 9, 10, 12)的TG和DTA测量进行了比较它们的热行为并确定吡啶在复合物中对从固态到液晶相的相变的影响。对于所有Cu 2 (R CO 2 ) 4 化合物,观察到从结晶相到液晶相的转变,但仅对于壬酸、癸酸和十二酸Cu(II)的吡啶配合物观察到。吡啶配合物的转变温度低于相应的Cu 2 (R CO 2 ) 4 。在刚好高于熔化温度重复加热时,Cu 2 (R CO 2 ) 4 py 2 复合物分解为Cu 2 (R CO 2 ) 4 ,其在较高温度下经历已知的结晶到液晶相转变。