钬和镱配合物的水热合成、晶体结构及热稳定性

钬和镱配合物的水热合成、晶体结构及热稳定性 Hydrothermal Synthesis,Crystal Structure and Thermal Stability Properties of Ho（Ⅲ） and Yb（Ⅲ） Complexes 张燕 ZHANG Yan 1 first-author 柯苹 KE Ping 1 蔡苹 CAI Ping 1 罗威 LUO Wei 1 程功臻 CHENG Gongzhen 1 武汉大学化学与分子科学学院 武汉大学化学与分子科学学院 College of Chemistry and Molecular Sciences,Wuhan University College of Chemistry and Molecular Sciences,Wuhan University 以4-（1,8-萘二甲酰亚胺基）苯甲酸配体及硝酸钬和硝酸镱为原料,采用水热法合成了Ho（Ⅲ）和Yb（Ⅲ）两种配合物.经单晶X射线衍射分析,两个配合物均属六方晶系,金属离子与羧酸中的氧原子桥连成螺旋链状结构.配合物1的晶胞参数:a=b=1.783 30（17）nm,c=0.942 15（11）nm,α=β=90%,γ=120%;配合物2的晶胞参数:a=b=1.780 39（8）nm,c=0.939 46（8）nm,α=β=90%,γ=120%.晶体的热稳定性研究结果表明:Ho（Ⅲ）和Yb（Ⅲ）配合物晶体分别在589℃和582℃时开始失去配体分子,晶体结构开始坍塌. Two novel Ho（Ⅲ）and Yb（Ⅲ）complexes 1 and2 based on 4-（1,8-naphthalimido）benzoic acid,holmiun nitrate and ytterbium nitrate have been synthesized by hydrothermal method.Single crystal X-ray diffraction studies show that the structure of complexes belongs to hexagonal system;the helical chains were formed by the metal ion and the oxygen atoms from carboxylic acid.The unit cell parameters of complex1 are as follows:a=b=1.783 30（17）nm,c=0.942 15（11）nm,α=β=90%,γ=120%,complex2 are as follows:a=b=1.780 39（8）nm,c=0.939 46（8）nm,α=β=90%,γ=120%.The thermal stability of the crystals show that the Ho（Ⅲ）and Yb（Ⅲ）complexes start to lose ligand at 589 ℃ and 582 ℃,respectively,when the crystal structure begins to collapse. Ho（Ⅲ）配合物 Yb（Ⅲ）配合物 螺旋链状结构 Ho（Ⅲ）complex Yb（Ⅲ）complex helical chains 10.14188/j.1671-8836.2015.01.010 O641.4 国家自然科学基金（21101121）;湖北省自然科学基金（2010CDB01301）资助项目 2015-01-01 2021-03-31 1 61