同系列电子给体与同系列电子受体电荷转移络合作用的研究

Investigation of CT-Complexation Among Homologous Donors and Homologous Acceptors

用电子吸收光谱法,研究了五个电子受体系列和三个电子给体系列以及非同系列的给、受体共48个化合物间的弱电荷转移络合作用.发现所研究的同系列给体与同一受体作用;或同系列受体与同一给体作用;或同系列给体与同系列受体作用,一般存在着明显的CT络合与表观不络合的现象.通常情况下,同系序数大的化合物呈现表观不络合;有时,同系序数大和小的化合物,即同系物的两头均呈现表观不络合现象.对此种现象用给、受体间前线分子轨道能级关系进行了讨论.

The weak CT-oomplexations among 48 compounds including five aooeptor homologous and three donor homologous series have been investigated with eleotronio speotrosoopy. It has been found that both oomplexation and apparent non-oomplexation exist generally no matter in oases of interaotion of homologous donors with same aooeptor or interaotion of homologous aooeptors with same donor, or interaotion of homologous donors with homologous aooeptors. Generally, the compounds with large homologous number appear apparent non-oomplexation; in some cases, the compounds with large or small homologous number appear apparent non-oomplexation too. It means both sides of a homologous series appear apparent non-oomplexation. This phenomenon was disoussed by means of the relationship of FMO energy between donor and aooeptor.