Citation: Nina Alizadeh, Sadegh Dehghanikhah. Spectrophotometric study of the charge transfer complexes of 4'-nitrobenzo-15-crown-5 and benzo-15-crown-5 with iodine in nonaqueous solvents[J]. Chinese Chemical Letters, ;2011, 22(5): 587-590. doi: 10.1016/j.cclet.2010.11.032 shu

Spectrophotometric study of the charge transfer complexes of 4'-nitrobenzo-15-crown-5 and benzo-15-crown-5 with iodine in nonaqueous solvents

Department of Chemistry, Faculty of Science, University of Guilan, Rasht, Iran

Received Date: 30 August 2010

The formation of charge transfer complex between iodine with 4'-nitrobenzo-15-crown-5(NB15C5)and benzo-15-crowN-5(B15C₅)is investigated spectrophotometrically in chloroform and dichloromethane(DCM)solutions at 25℃.The pseudo-first-order rate constants for the transformation process were evaluated from the absorbance-time data and found to vary in the order of DCM > CHCl₃.The values of the formation constant, K_f, for each complex are evaluated from Benesi-Hilebrand equation.Stability of the resulting complex in two solvents was also found to vary in the order of DCM > CHC1₃.
- Charge transfer complex,
- Spectrophotometry,
- Kinetic,
- Crown ether
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