二维网状配合物[Cd(HL)(tbb)(H_2O)]·2H_2O的合成、晶体结构及荧光性质

Synthesis,Crystal Structure and Luminescence of a 2D Network Coordination Polymer [Cd(HL)(tbb)(H_2O) ]·2H_2O

以Cd(CH3COO)2、5-羟基间苯二甲酸(H3L)和新型多齿含氮配体2,4,6-三甲基-1,3-(二亚甲基苯)二(1,2,4-三氮唑)(tbb)为原料,通过水热方法合成了标题化合物。采用元素分析、红外光谱和X-单晶衍射法表征了该配合物的结构。结果表明:该化合物属于单斜晶系,空间群P21/c,晶胞参数a=1.033 74(5)nm,b=2.936 73(16)nm,c=0.843 23(5)nm,β=104.206(5)°,V=2.481 6(2)nm3,Z=4,F(000)=1 280,D c=1.683 g/cm3,R1=0.040 5,wR2=0.043 0[I>2σ(I)]。配合物中Cd(Ⅱ)离子被HL2-阴离子和tbb中性配体连接成一个二维的网状结构,相邻的网进一步通过氢键作用形成一个双层结构,最终这些双层通过π…π的相互作用形成三维超分子结构。此外,还研究了该化合物在室温下的固体荧光性质。

A novel 2D complex [Cd（HL） （tdb） （H2O）· 2H2O was synthesized by the hydrothermal reaction of Cd （ CH3 CO0 ） 2,5-OH-l, 3-benzenedicarboxylate acid （ H3 L ） , and 1,3-bis（ 1,2,4-triazol-l-ylmethyl） -2,4,6-trimethyl ben- zene（tbb） ligand. The structure has been determined by sin- gle crystal X-ray diffraction analysis and further characterized by elemental analysis and IR. 1 belongs to monoclinic system, space group P21/c with a = 10. 337 4（5） ,b =29. 367 3（16）, c=8.4323（5）A,/3=104.206（5）°,V=2 481.6（2）A3, Z=4,F（000） = 1 280,D0 =1.683 g/cm3,R1 =0.040 5, wR1 =0.043 0 [I〉2σ（1）].In 1,the Cd（II） cations are linked by the HL2- anions and tbb ligands to form a two-di- mensional（2D） sheet structure, and the adjacent sheets are further connected through the hydrogen bonds to exhibit double layer structures. Finally ,the double layers are extended into a three-dimensional （3D） supermolecular structure through π-π interactions. In addition, the luminescent property of the complex is also discussed in the solid state at room temperature.