两种8-羟基喹啉合铜配合物的合成及晶体结构表征

Synthesis and Crystal Structure of Two Copper Complex with 8-Hydroxy Quinoline

用8-羟基喹啉、醋酸铜与硅酸钠分别在四氢呋喃和甲醇溶液中反应,生成了两种8-羟基喹啉合铜的配合物.溶剂为四氢呋喃时得到了含有两个配位水的蓝色的晶体Cu(C9H6NO)2.(2H2O)(Ⅰ);溶剂为甲醇时得到的却是不含水的双核的黑色晶体Cu2(C9H6NO)4(Ⅱ),两种晶体的晶胞参数不同.该文通过X射线单晶衍射分析了8-羟基喹啉合铜晶体结构,并用红外、热重、元素分析等方法进行了结构表征.单晶结构解析表明:两种配合物都属于单斜晶系,P21/c空间群.配合物Ⅰ的晶胞参数为:a=12.9541(2),b=5.54060(10),c=11.4288(2),β=106.395 0(10)°.配合物Ⅱ的晶胞参数为:a=10.6619(3),b=8.6201(3),c=15.2628(4),β=102.286(2)°.在这两种结构中,硅酸钠均没有参与配位.

Two Cu（ Ⅱ ） complexes with the ligand 8-Hydroxy quinoline have been synthesized and fully characterized by elemental analysis, IR, X-ray crystal diffraction, thermal analysis. Interestingly, different structures the two complexes synthesized have due to the different solvent, THF and methanol respectively. Single crystal X-ray diffraction analysis of the complexes [Cu（C9 H6 NO）2 （ H2O）2 ] （complex Ⅰ, blue） and [CU2 （C9 H6 HO）4 ] （complex Ⅱ, black） reveal their monomeric or dimeric nature. The two compounds both crystallize in the monoclinic system, space group P21/c. Complex（ I ） has cell parameters a=12. 954 1（2）A, b=5. 5406 0（10）,A, c=11. 428 8（2）,A, β= 106. 395 0（10）°, and complex （ 11 ） with cell pa- rameters a=10. 661 9（3）A,b=8. 620 1（3）A,c= 15. 262 8（4）A,β=102. 286（2）°. In the two complexes, silicon do not participate in the coordination.