Acta Phys. -Chim. Sin. ›› 1995, Vol. 11 ›› Issue (10): 937-940.doi: 10.3866/PKU.WHXB19951017

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Charge Transfer Complexation of N-substituted Phenothiazines with DDQ

Ying Bai-Ning,Wu Guo-Xiang   

  1. Department of Chemistry,Modern Biology Center,Yunnan University,Kunming 650091
  • Received:1994-11-26 Revised:1995-01-26 Published:1995-10-15
  • Contact: Ying Bai-Ning


The charge transfer complexes (CTC) formed from N-substituted phenothiazines with 2,3-dichloro-5,6-dicyanobenzoquione (DDQ ) in 1,2-dichloroethane were studied spectrophotometrically. The CT spectra, ionization potentials of donor and the thermodynamic data (K, △H,△S) of CTC were determined. The results show that the charge donation of N-substituted phenothiazines is fairly strong and depends on the polarity of the substituent.

Key words: Phenothiazines, 2,3-dichloro-5,6-decyanobenzoquinone(DDQ), Charge transfer complex, Ionization potential