CAJ | 학술논문

为了制备一种新型高低介电态的电学双稳态分子基杂化相变材料，采用水热法合成了具有青铅矿拓扑结构的相变化合物[HN（CH2）6 NH][CdCl2（SO4）]（1）。通过变温 X 射线单晶结构测定法、差式扫描量热法（DSC）及变温介电测量法对其结构和性质进行了表征和研究。介电测量和 DSC 分析结果表明化合物1发生了二级可逆相变。单晶结构解析表明，硫酸根四面体中2个氧原子的无序性造成 SO－4四面体的摇摆运动和双质子化1，4—二氮杂二环[2．2．2]辛烷（DABCO）的运动，这些结构变化即为产生电学双稳态的室温相变的驱动力。化合物1的合成为高低介电态的电学双稳态分子基杂化相变材料的合成提供了一个新的途径。
위료제비일충신형고저개전태적전학쌍은태분자기잡화상변재료，채용수열법합성료구유청연광탁복결구적상변화합물[HN（CH2）6 NH][CdCl2（SO4）]（1）。통과변온 X 사선단정결구측정법、차식소묘량열법（DSC）급변온개전측량법대기결구화성질진행료표정화연구。개전측량화 DSC 분석결과표명화합물1발생료이급가역상변。단정결구해석표명，류산근사면체중2개양원자적무서성조성 SO－4사면체적요파운동화쌍질자화1，4—이담잡이배[2．2．2]신완（DABCO）적운동，저사결구변화즉위산생전학쌍은태적실온상변적구동력。화합물1적합성위고저개전태적전학쌍은태분자기잡화상변재료적합성제공료일개신적도경。
A new molecular-hybridized dielectric material [HN(CH2 )6 NH][CdCl2 (SO4 )](1)with electrical bistability,has been synthesized under hydrothermal condition.Compound 1 is a phase transition material-cadmium sulfates of linerate topology.It has been characterized by variable-temperature X-ray single-crystal diffraction analysis,DSC and temperature-dependent dielectric measurement.Dielectric measurement and DSC results reveal that it has undergone a reversible second-order phase transition. X-ray single-crystal analysis shows that the disorder of two O atoms from SO-4 tetrahedron contributes to the swaying of SO-4 tet-rahedron and the motion of diprotonated DABCO cations,which is the driving force for the room-temperature phase transition. This novel design of the intelligent information processing materials between high and low dielectric states will open a new avenue for the synthesis of this type of materials.