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本文用差示扫描量热(DSC)、热重(TG)和红外光谱法研究了标题配合物(简记为C_9M)的热稳定性和固—固相变.讨论了中心金属离子对热稳定性和相变的影响.发现其热稳定性依C_9Co>C_9Mn>C_9Zn>C_9Cu降低.固—固相变数目、相变温度和相变的有序—无序效应主要取决于中心金属离子的种类。Zn组配合物总相变的无序效应比Cu组高,在高温相为完全无序相。C_9Zn配合物低温相变(285K)主要来源于链间相互作用和堆积态的有序—无序变化.高温相为“链熔化”态.
In this paper, the thermal stability and solid-solid phase transition of the title complex (abbreviated as C_9M) have been investigated by differential scanning calorimetry (DSC), thermogravimetry (TG) and infrared spectroscopy. The results show that the thermal stability decreases with the increase of C9C> C9Mn> C9Zn> C9Cu.The order-disorder effect of the number of solid-solid phase, the phase transition temperature and the phase transition mainly depends on the type of central metal ion . The disorder effect of total phase transformation of Zn group is higher than that of Cu group, and completely disordered phase at high temperature. The phase transformation of C_9Zn at low temperature (285 K) is mainly attributed to the orderly-disorder change of interchain interactions and accumulation, while the high temperature phase is “chain melting”.