Two Coordination Polymers Constructed by Cd(Ⅱ) and Zn(Ⅱ) with in situ Generated 5-(3-Pyridyl)tetrazolate Ligand：Syntheses,Crystal Structures and Luminescence Properties  

作　　者：卢文贯 王小兵 刘宏文 洪显兰 

机构地区：[1]Department of Chemistry,Shaoguan University

出　　处：《Chinese Journal of Structural Chemistry》2016年第3期383-391,共9页结构化学（英文）

基　　金：supported by the National Natural Science Foundation of China(No.21071099);Natural Science Foundation of Guangdong Province(No.2015A030313750);Characteristic Innovation Projects Guangdong Provincial Department of Education(Natural Science Category,2014KTSCX169)

摘　　要：Hydrothermal reactions of 3-cyanopyridine and Na N3 with Zn Cl_2 or Cd Cl_2·5/2H_2 O in the presence of 1,4-benzenedicarboxylic acid（H2bdc） yielded two new coordination polymers,{[Zn（3-ptz）（bdc）_（0.5）（H_2O）_2]n·2H_2O}_n（1） and [Cd_2（3-ptz）_2Cl_2]_n（2）,based on in situ synthesized 5-（3-pyridyl）tetrazolate（3-ptz-） organic ligand.They have been structurally characterized by elemental analysis（EA）,infrared spectroscopy（IR） and single-crystal/powder X-ray diffraction（PXRD）.In 1,two Zn（Ⅱ） ions are linked together through two μ_2-（3-ptz-） ligands to form a dimeric unit of [Zn（μ_2-3-ptz）（H_2O）_2]2^2＋,which is further connected with other equivalent units by μ_2-bdc^2-spacers,resulting in an infinite 1D polymeric chain of [Zn_2（3-ptz）_2（H_2O）_2（bdc）]_n,and then strong hydrogen bonding interactions extend these 1D chains into a 3D supramolecular structure.In 2,the Cd（Ⅱ） ions are connected through μ_4-（3-ptz-） ligands and Cl-anions,leading to infinite 2D layers of [Cd_2（3-ptz）Cl_2]_n^n＋,which are further linked by another μ_4-（3-ptz-） pillared ligand to form a 3D layered-pillared framework architecture of [Cd）2（3-ptz））2Cl）2]）n.Furthermore,thermal stability of these compounds was measured by thermogravimetric analysis（TGA） and their photoluminescent properties were also investigated in the solid state at room temperature.Hydrothermal reactions of 3-cyanopyridine and Na N3 with Zn Cl_2 or Cd Cl_2·5/2H_2 O in the presence of 1,4-benzenedicarboxylic acid（H2bdc） yielded two new coordination polymers,{[Zn（3-ptz）（bdc）_（0.5）（H_2O）_2]n·2H_2O}_n（1） and [Cd_2（3-ptz）_2Cl_2]_n（2）,based on in situ synthesized 5-（3-pyridyl）tetrazolate（3-ptz-） organic ligand.They have been structurally characterized by elemental analysis（EA）,infrared spectroscopy（IR） and single-crystal/powder X-ray diffraction（PXRD）.In 1,two Zn（Ⅱ） ions are linked together through two μ_2-（3-ptz-） ligands to form a dimeric unit of [Zn（μ_2-3-ptz）（H_2O）_2]2^2＋,which is further connected with other equivalent units by μ_2-bdc^2-spacers,resulting in an infinite 1D polymeric chain of [Zn_2（3-ptz）_2（H_2O）_2（bdc）]_n,and then strong hydrogen bonding interactions extend these 1D chains into a 3D supramolecular structure.In 2,the Cd（Ⅱ） ions are connected through μ_4-（3-ptz-） ligands and Cl-anions,leading to infinite 2D layers of [Cd_2（3-ptz）Cl_2]_n^n＋,which are further linked by another μ_4-（3-ptz-） pillared ligand to form a 3D layered-pillared framework architecture of [Cd）2（3-ptz））2Cl）2]）n.Furthermore,thermal stability of these compounds was measured by thermogravimetric analysis（TGA） and their photoluminescent properties were also investigated in the solid state at room temperature.

关 键 词：coordination polymers 5-（3-pyridyl）tetrazole crystal structure fluorescence 

分 类 号：O641.4[理学—物理化学]