摘要
采用水热合成技术合成了2种金属有机配合物{Pb(cbba)2(m-bix)}n(1)和{[Zn2(btx)2(NDC)2]}n(2)(H2cbba为2-(4-氯苯甲酰)苯甲酸,m-bix为1,3-二咪唑基亚甲基苯,btx为对二(三氮唑甲基)苯,H2NDC为1,4-萘二甲酸),通过元素分析、红外光谱、X射线单晶衍射和X射线粉末衍射对配合物的结构进行表征.结果表明,配合物1属于三斜晶系,P-1空间群,中心离子Pb(Ⅱ)为变形四面体构型,晶胞参数为a=1.13521(3)nm,b=1.19508(3)nm,c=1.42289(4)nm.配合物2属于单斜晶系,I2/m空间群,中心离子Zn(Ⅱ)为四面体构型,晶胞参数为a=1.99118(6)nm,b=2.11760(4)nm,c=2.77804(8)nm.配合物1是零维结构,借助于丰富的非经典C—H···O、C—H···Cl氢键作用力,该配合物最终拓展成六连接的三维超分子网状结构,拓扑符号为{412.63}.配合物2是双Zn(Ⅱ)一维链状结构,其拓扑符号为{42.6},借助于丰富的非经典C—H···O、C—H···N氢键作用力,该配合物也拓展成六连接的三维超分子网状结构.此外,光致发光研究发现,配合物1在519 nm和555nm处有明显的绿色发射峰;配合物2在392 nm和463 nm处有明显的紫色和蓝色发射峰,这些研究结果都表明2种配合物均是潜在的荧光材料.
Two novel metal-organic complexes{Pb(cbba)2(m-bix)}n(1)and{[Zn2(btx)2(NDC)2]}n(2)(H2 cbba=2-(4-chlorobenzoyl)-benzoic acid,m-bix=1,3-bis(imidazol-1-ylmethyl)-benzene,btx=1,4-bis(1,2,4-triazol-1-ylmethyl)benzene,H;NDC=1,4-naphthalenedicarboxylic acid)have been hydrothermally synthesized.The structure was characterized by techniques of elemental analysis,infrared spectra,single-crystal X-ray diffraction analysis,powder X-ray diffraction.The results showed that the complex 1 is triclinic,space group of P-1,and the central Pb(Ⅱ)has a deformed tetrahedron configuration.The crystal cell parameters are a=1.13521(3)nm,b=1.19508(3)nm and c=1.42289(4)nm.However,the complex 2 is monoclinic,space group of I2/m,and the central Zn(Ⅱ)has a tetrahedron configuration.The crystal cell parameters are a=1.99118(6)nm,b=2.11760(4)nm and c=2.77804(8)nm.The complex 1 exhibited 0 D structure,which extended into a 3 D 6-connected supramolecular network by means of abundant non-classical C-H···O and C-H···Cl hydrogen bonding forces,and the point symbol of this network is{412.63}.While the complex 2 featured a double Zn(Ⅱ)1 D chain with the symbol of{42.6},which extended into a 3 D 6-connected supramolecular network by means of abundant nonclassical C-H···O and C-H···Cl hydrogen bonding forces.In addition,photoluminescence investigations revealed that complex 1 has green emission at 519 nm and 555 nm respectively,while complex 2 has purple and blue emission at 392 nm and 463 nm respectively,indicating that both of the complexes can be used as potential fluorescent materials.
作者
李杨华
刘宇奇
代思玉
王新颖
李玮
LI Yang-hua;LIU Yu-qi;DAI Si-yu;WANG Xin-ying;LI Wei(Faculty of Science,Kunming University of Science and Technology,Kunming 650500,Yunnan,China;Faculty of Metallurgical and Energy Engineering,Kunming University of Science and Technology,Kunming 650093,Yunnan,China)
出处
《云南大学学报（自然科学版）》
CAS
CSCD
北大核心
2022年第2期338-348,共11页
Journal of Yunnan University(Natural Sciences Edition)
基金
国家自然科学基金联合基金(u1502273)
昆明理工大学引进人才科研启动基金(KKSY201507026)
昆明理工大学分析测试基金(2019M20182111050)。
关键词
金属有机配合物
晶体结构
荧光性能
超分子网络结构
水热合成
metal-organic complex
crystal structure
fluorescence property
supramolecular network
hydrothermal synthesis
作者简介
李杨华(1997−),男,云南人,硕士生,主要研究功能配合物.E-mail:liyanghua112753@163.com;通信作者:刘宇奇(1975−),女,云南人,副教授,主要研究功能配合物.E-mail:liuyuqi7547@163.com.
