【摘要】 用电化学结晶方法合成出一种新的导电分子晶体（BEDT-TTF）₂HgCl₃·TCE,[（BEDT-TTF）=双亚乙基二硫四硫富瓦烯,TCE=1,1,2-三氯乙烷].用四圆X衍射方法确定了它的晶体结构,测得（BEDT-TTF）₂HgCl₃·TCE单晶在bc平面的ln（R/R₀）与T^-1呈线性关系.（BEDT-TTF）₂HgCl₃·TCE晶体中,（BEDT-TTF）^+0.5阳离子自由基沿b方向等距并肩排列,由S…S分子间相互作用维系,形成一维导电结构;阴离子（HgCl₃）^-也沿b方向形成一维聚合体（HgCl₃）_n^n-,因而（BEDT-TTF）₂HgCl₃·TCE属一维半导体.为了研究导电分子晶体的导电性与结构的关系,制备了有机超导体β-（BEDT-TTF）₂I₃,讨论了β-（BEDT-TTF）₂I₃的导电性优于（BEDT-TTF）₂HgCl₃·TCE的结构原因.更多还原

【Abstract】 A new semiconductor of organic crystal (BEDT - TTF)2HgCl3·TCE, [(BEDT - TTF) = bis(ethylenedithio)tetrathiafulvalene, TCE = 1,1,2 - trichloroethane ] has been synthesized by electro ?crystallization method. Its structure was determined by four- circle X- ray diffraction method. ln(R/R0) of its single crystal on bc - plane was measured to have a linear relationship to T-1. In (BEDT - TTF)2HgCl3·TCE crystal, the BEDT - TTF cationic radicals are arranged side - by - side equidistantly forming a kind of one - dimensional structure along the b axis. ( HgCl3)- anions also form another kind of one - dimensional polymers (HgCl3)nn- along this direction. Therefore, (BEDT - TTF)2HgCl3·TCE is an one - dimensional organic semiconductor. In order to reveal the conductivity - structure relationships, we have also synthesized the known organic superconductor (3 - (BEDT - TTF)2I3 and discussed why the conductivity of β - (BEDT -TTF)2I3 is superior to that of (BEDT-TTF)2HgCl3·TCE.更多还原