Synthesis of New Organic Donor Molecules and Highly Conducting Organic Complexes

（1）高导电有机配合物晶体结构对导电有机盐的电性能有显著的影响。为了研究施主位的微小改变对晶体和能带电子结构以及电导率的影响，我们比较了BEDT-TTF_2 PF_6、EVT_2PF_6和VT_2 PF_6的晶体和能带电子结构。我们发现BEDT-TTF盐的两个亚乙烯基被乙烯基取代后，BEDT-TTF盐的二维能带结构转变为VT盐的准一维能带结构。为了得到新型的导电有机盐，我们合成了几种含硫的过渡金属-二氢氧化物盐和TTF衍生物。在soJLecule的原子。我们还通过电化学方法合成了含有后者TTF衍生物的导电盐。一些EOTT盐显示。金属电导率下降到4.2K。（2）非线性光学材料对以1，3-二硫杂环戊烯环为给体，氰基和酯基为受体的三阶非线性光学材料进行了晶体学分析。我们还发现了几种乙烯衍生物的SHG活性材料，其中四个氢原子被dqw和受体取代基取代。这些材料是蓝、绿、紫透明的，可用作红外半导体激光器的倍频材料。

(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.