Effects of methyl substituent on the charge-transfer complexations of dicarbazolylalkanes with p-chloranil, tetracyanoethylene and tetracyanoquinodimethane
作者:Erol Asker、Ece Uzkara、Orhan Zeybek
DOI:10.1016/j.saa.2011.05.047
日期:2011.9
constants, enthalpies, and entropies of their charge-transfer (CT) complexes with the π-acceptors p-chloranil, tetracyanoethylene, and tetracyanoquinodimethane were investigated. 1,n-Di(3-methylcarbazolyl)alkanes formed CT complexes with higher equilibrium constants, more negative enthalpies and entropies than 1,n-dicarbazolylalkanes. Vibrational spectra of CT complexes of one of the donor molecules (1,4-dicarbazolylbutane)
合成了一系列1,n-二咔唑基烷烃和1,n-二(3-甲基咔唑基)烷烃(其中n = 1-5),并确定了其电荷转移(CT)的摩尔消光系数,平衡常数,焓和熵研究了与π-受体对氯苯甲醚,四氰基乙烯和四氰基喹二甲烷的配合物。1,n-二(3-甲基咔唑基)烷烃形成的CT络合物比1,n-二咔唑基烷烃具有更高的平衡常数,更多的负焓和熵。比较了供体分子之一(1,4-二咔唑基丁烷)与所有三个受体的CT复合物的振动光谱。