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用Raman光谱研究了[n-C_(11)H_(23)NH_3]_2ZnCl_4(简记为C_nZn)配合物的固-固相变.结果表明,配合物产生的固-固相变主要与烷烃链的堆积结构和分子构象变化有关.在 T_(c1)=25℃的相变是由于烷烃链的侧向堆积和分子构象的有序到部分无序变化.在中间相,分子链局部产生旁式构象.在T_(c2)=87℃的相变主要来源于烷烃链从部分构象有序到完全无序的变化.高温相形成了构象完全无序相.相应于烷烃链的“熔化”.
The solid-solid phase transition of [n-C_ (11) H_ (23) NH_3] _2 ZnCl_4 (abbreviated as C_nZn) was studied by Raman spectroscopy.The results show that the solid- The phase transition at T c1 = 25 ℃ is due to the side-by-side stacking of alkane chains and the orderly to partial disorder of molecular conformation.In the mesophase, The phase transition at T c2 = 87 ° C is mainly due to the partial conformational to complete disordered changes of the alkane chains, and the high temperature phase leads to the conformationally complete disordered phase corresponding to the “melting” of the alkane chains.