{VO_3}_n^(n-)和{M(bpp)(H_2O)_2}_n^(2n+)链编织的三维配位聚合物的合成、结构及电化学性质

Synthesis,crystal structure and electrochemical properties of 3D coordinated polymers based on{VO_3}_n^(n-) and {M(bpp)(H_2O)_2}_n^(2n+) chains

在水热条件下,合成了2个Ni(Ⅱ)和Co(Ⅱ)的配位聚合物:[M(bpp)(H2O)2V2O6]·0.4H2O(bpp=1,3-二(4-吡啶)丙烷;M=Ni(1)和Co(2)).单晶X射线衍射分析结果表明,配合物1和2是同晶异质体,是由无限的一维{VO3}nn-和{M(bpp)(H2O)2}n2n+链构筑的三维结构,{M(bpp)(H2O)2}n2n+链沿着a和b轴方向伸展,编织成互相穿插的三维结构,而{VO3}nn-螺旋链沿c轴方向穿插在{M(bpp)(H2O)2}n2n+链编织所形成的孔道中,并与M(Ⅱ)形成配位键.电化学测试表明,Li+能够可逆地在配合物1和2中进出.

Two Ni（Ⅱ） and Co（Ⅱ） coordination polymers, [M（bpp）（H2O）2V2O6] 0.4H2O （bpp = 1,3＇-di-pyridylpropane; M = Ni and Co）, were synthesized via the hydrothermal method. The crystal structure analysis showed that the compounds were isomorphous. The {M（bpp）（H20）2}n2n＋ chains are projected along the a and b axes. The chains are woven into a three-dimensional crisscross structure. The helical [VO3}nn- chains that are connected with the M（Ⅱ） are located in the {M（bpp）（H20）2}n^2n＋ channels along the c axis. Electrochemical measurements showed that lithium ions can be reversibly intercalated and deintercalated in two Ni（Ⅱ） and Co（Ⅱ） coordination polymers.