摘要
在水热条件下利用邻苯二乙酸,2,2′-二联吡啶和硝酸镉反应生成配合物[Cd_2(1,2-pda)_2(bipy)_2(H_2O)_2]_n(1,2-pda=邻苯二乙酸、2,2′-bipy=2,2′-二联吡啶)。采用红外光谱、差热-热重、C H N元素分析、荧光及单晶X射线衍射等手段对晶体结构进行了表征。配合物属正交晶系,空间群为Pna2(1);晶体学参数:a=18.5087(18)nm,b=8.9432(9)nm,c=23.685(2)nm;α=β=γ=90。其基本结构单元由两个Cd(II)原子、两个邻苯二乙酸根、两个2,2′-二联吡啶、两个水分子组成。邻苯二乙酸与Cd(Ⅱ)原子交替连接形成一维直线,相邻的两条直线通过氢键的支撑连接形成一维双链结构。荧光性质研究表明,配合物在504nm处呈现较强的荧光发射(λ_(ex)=350nm)。
The compound [Cdz（ 1,2-pda）2（bipy）2（H2O）2]n has been hydrothermally synthesized and characterized by means of elemental analysis, IR, TG-DSC, fluorescence analysis and single crystal X-ray diffraction. The results show that the compound is orthorhombic, with a space group of Pna2 （ 1 ）, a= 18.5087 （ 18 ） nm, b=8.9432 （ 9 ） nm, c =23.685 （2） nm; α=β=γ= 90°. The crystal structure of compound consists of two cadmium （ II ）, two 1,2-pda, two 2,2＇-bipyridine and two water molecules. It should be noted that all cadmium （II） are connected by 1,2-pda ligands, forming an 1D chain motif. Furthermore, two ID arrays are extended to ID double chain architecture through hydrogen bonding. The photoluminescence properties of compound is also investigated, and it shows photoluminescence properties at 504nm （λ=350nm）.
出处
《化学与粘合》
CAS
2016年第4期247-249,259,共4页
Chemistry and Adhesion
基金
省级大学生创新创业训练计划项目(编号:1452)
延安大学自然科学专项基金(编号:YD2014-06)
关键词
配合物
合成
晶体结构
荧光性质
Compound
synthesis
crystal structure
photoluminescence properties
