甲硅烷基取代对二咔唑基烷与对氯苯醌、四氰基乙烯及四氰基对醌二亚甲基复合物电荷转移的影响。
Effects of methyl substituent on the charge-transfer complexations of dicarbazolylalkanes with p-chloranil, tetracyanoethylene and tetracyanoquinodimethane.
机构信息
Balıkesir University, Department of Chemistry Education, 10100 Balıkesir, Turkey.
出版信息
Spectrochim Acta A Mol Biomol Spectrosc. 2011 Sep;79(5):1731-8. doi: 10.1016/j.saa.2011.05.047. Epub 2011 Jun 7.
Series of 1,n-dicarbazolylalkanes and 1,n-di(3-methylcarbazolyl)alkanes (where n=1-5) were synthesized and the molar extinction coefficients, equilibrium 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) with all three acceptors were compared.
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）被合成，其与π-受体对氯苯醌、四氰基乙烯和四氰基醌二甲烷的电荷转移（CT）复合物的摩尔消光系数、平衡常数、焓和熵也被研究。1,n-二（3-甲基咔唑基）烷烃与 CT 复合物形成的平衡常数更高，焓和熵的负值也比 1,n-二咔唑基烷烃更大。对一个给体分子（1,4-二咔唑基丁烷）与所有三个受体的 CT 复合物的振动光谱进行了比较。
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