含吡啶基的EDT-TTF的合成、结构及性质研究

Synthesis,Structure and Property of Pyridyl Substituted EDT-TTF

以亚磷酸三乙酯为偶合剂,得到两个吡啶基修饰的四硫富瓦烯衍生物1和2。利用1H NMR、MS和单晶X-衍射对化合物进行表征,化合物1属单斜晶系,空间群P21/c,其晶胞参数为a=0.4261(1)nm,b=1.2291(1)nm,c=2.8556(3)nm,Z=4,V=1.4935(3)nm3,Dc=1.653 g/cm3,F(000)=760,R=0.043,!R=0.0827(I>2σ(I))。化合物1和2的电化学性质表现出TTF体系特有的两对氧化可逆的单电子峰,与其他含吡啶基团的TTF衍生物的电化学性质相类似,是一类新的电子给体。

Two ethylenedithiotetrathiafulvalenes substituted with a pyridyl（Py） group（EDT-TTF-A） [A=3-Py（1） and A=4-Py（2）] have been synthesized and characterized by 1H NMR,MS and XRD.The crystal of the compound 1 belongs to monoclinic system and space group P21/c with cell parameters a=0.4261（1） nm,b=1.2291（1） nm,c=2.8556（3） nm,Z=4,V=1.4935（3） nm3,Dc=1.653g/cm3,F（000）=760,R=0.043,SymbolwA@R=0.0827（I 2σ（I））.Cyclic voltammetry measurements of the two compounds display two reversible redox peaks corresponding to the TTF/TTF and TTF/TTF2＋ and show the similar redox potentials comparable to other pyridine-substituted TTF derivatives.The results indicate that compounds 1 and 2 are good electronic donors.