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首页> 外文期刊>Zeitschrift fur Naturforschung, B. A Journal of Chemical Sciences >Organometalloidal compounds with o-phenylene substituents, part XXXI. Charge-transfer complexes of 2,3,7,8-tetrakis(methylthio)chalkogenanthrenes with 7,7,8,8-tetracyanoquinodimethane and tetracyanoethene [German]
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Organometalloidal compounds with o-phenylene substituents, part XXXI. Charge-transfer complexes of 2,3,7,8-tetrakis(methylthio)chalkogenanthrenes with 7,7,8,8-tetracyanoquinodimethane and tetracyanoethene [German]

机译:具有邻亚苯基取代基的有机金属化合物,第XXXI部分。 2,3,7,8-四(甲硫基)chalkogenanteneenes与7,7,8,8-四氰基喹二甲烷和四氰基乙烯的电荷转移络合物[德国]

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摘要

The title compounds are prepared by slow evaporation of dilute solutions of the components. 2,3,7,8-Tetrakis(methylthio)thianthrene and -selenanthrene give isostructural 2:1 complexes with 7,7,8,8-tetracyanoquinodimethane (TCNQ) built up by donor/acceptor/donor units in which the TCNQ molecule is inserted into the cavity formed by two of the folded, oppositely arranged chalcogenanthrene molecules. These units are connected to chains by S ... S contacts via the methylthio groups. From 2,3,7,8-tetrakis(methylthio)thianthrene and tetracyanoethene again a 2:1 complex is obtained, however, with a columnar structure in which two donor stacks are slightly interlinked by an acceptor stack thus forming a structure with alternating donor and acceptor molecules. The molecules are arranged in such a way that an optimum overlap of the HOMOs of the donors and the LUMOs of the accepters, all of which are of pi-type character according to MNDO calculations, is secured. [References: 38]
机译:通过缓慢蒸发组分的稀溶液来制备标题化合物。 2,3,7,8-四(甲硫基)蒽和-硒基蒽与7,7,8,8-四氰基喹二甲烷(TCNQ)形成同构2:1络合物,由TCNQ分子位于其中的供体/受体/供体单元构建插入到由两个折叠的,相对排列的硫属蒽分子形成的空腔中。这些单元通过甲硫基通过S ... S触点连接到链上。从2,3,7,8-四(甲硫基)蒽和四氰基乙烯再次获得2:1的配合物,但是具有柱状结构,其中两个施主堆叠通过受体堆叠轻微地相互连接,从而形成具有交替供体的结构和受体分子。分子以确保供体的HOMO和受体的LUMO的最佳重叠的方式排列,根据MNDO计算,所有这些均具有pi型特征。 [参考:38]

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