Synthesis of New Organic Donor Molecules and Highly Conducting Organic Complexes

(1)高导电性有机配合物晶体结构对导电性有机盐的电性能有显著影响。为了研究给体位点的轻微修饰对bett - ttf_2pf_6、EVT_2PF_6和VT_2PF_6晶体和能带电子结构及电导率的影响，我们比较了它们的晶体和能带电子结构。我们发现，乙烯基取代了BEDT-TTF的两个乙烯基团，导致BEDT-TTF盐的二维带结构转变为VT盐的伪一维带结构。为了获得新的导电有机盐，我们合成了几种含硫过渡金属二二盐和含硫TTF衍生物。原子在soJLecule。我们还用电化学方法合成了含有后一种TTF衍生物的导电盐。展出了部分EOTT盐。金属电导率降至4.2 K。(2)非线性光学材料对以1,3 -二噻唑环为供体位，以邻氨基和酯基为受体位的二阶非线性光学材料进行了晶体分析。我们还发现了一些乙烯衍生物的SHG活性物质，其中四个氢原子被dqw和受体取代基取代。这些材料是透明的，蓝色的，可以用作红外半导体激光器的倍频器。

(1)Highly Conducting Organic ComplexesCrystal structure has a pronounced effect on the electrical properties of conducting organic salts. In order to investigate the effect of the slight modification of the donor site on the crystal and band electronic structures and electrical conductivities, we compared the crystal and band electronic structures of BEDT-TTF_2PF_6, EVT_2PF_6, and VT_2PF_6. We found that the replacement of the two ethylene groups of BEDT-TTF by vinylene group results in the change from two-dimensional band structure of BEDT-TTF salt to pseudo one-dimensional band structure of VT salt. In order to obtain new conducting organic salts, we synthesized several transition metal-dmio salts and TTF derivatives possesing sulti-sulfur. atons in the soJLecule. We also synthesized conducting salts containing the latter TTF derivatives by an electrochemical method. Some of the EOTT salts exhibited. metallic conductivities down to 4.2 K.(2)Non-Linear Optical MaterialsCrystallographic analysis was made for the seeond-order non-linear optical material possessing 1, 3-dithiole ring as a donor site and eyano and ester groups as the acceptor sites. We also found several SHG active materials for the ethylene derivatives, in which four, hydrogen atoms were su4stituted by dqw and acceptor substituents. These materials are transparent inLt#e, blue y#veleaft rwon, and can be used as frequency doublers of infrared semiconductor lasers.