Department of Chemistry, Faculty of Science, Aligarh Muslim University, Aligarh 202002, U.P., India.
Spectrochim Acta A Mol Biomol Spectrosc. 2010 Apr;75(4):1347-53. doi: 10.1016/j.saa.2009.12.085. Epub 2010 Jan 6.
The charge transfer complexes of the donor p-toluidine with pi-acceptor picric acid have been studied spectrophotometrically in various solvents such as carbon tetrachloride, chloroform, dichloromethane acetone, ethanol, and methanol at room temperature using absorption spectrophotometer. The results indicate that formation of CTC in non-polar solvent is high. The stoichiometry of the complex was found to be 1:1 ratio by straight-line method between donor and acceptor with maximum absorption bands. The data are discussed in terms of formation constant (K(CT)), molar extinction coefficient (epsilon(CT)), standard free energy (DeltaG(o)), oscillator strength (f), transition dipole moment (mu(EN)), resonance energy (R(N)) and ionization potential (I(D)). The results indicate that the formation constant (K(CT)) for the complex was shown to be dependent upon the nature of electron acceptor, donor and polarity of solvents that were used.
用紫外分光光度计在室温下于不同溶剂（四氯化碳、氯仿、二氯甲烷、丙酮、乙醇和甲醇）中研究了给体对甲苯胺与π受体苦味酸的荷移配合物。结果表明，在非极性溶剂中形成 CTC 的比例较高。通过在供体和受体之间的直线法，发现配合物的化学计量比为 1:1，最大吸收带。数据是根据形成常数（K(CT)）、摩尔消光系数（epsilon(CT)）、标准自由能（DeltaG(o)）、振子强度（f）、跃迁偶极矩（mu(EN)）、共振能（R(N)）和电离势（I(D)）来讨论的。结果表明，配合物的形成常数（K(CT)）取决于电子受体、供体的性质和所用溶剂的极性。
