Abstract
The U V-VIS spectra of molecular complexes of paraquat with ring and N-substituted anilines have been recorded in methanol and 50% v/v aqueous methanol. All the complexes exhibited well-resolved charge transfer bands in the wavelength region where neither of the components have any absorption. The energies of charge transfer bands of the substituted aniline-paraquat complexes bear linear relationships with the ionization potentials obtained from the substituted aniline-TCNE complexes, indicating π - π interaction between paraquat and the donors. Both ring and N-substituents have effects on the positions of the CT bands as well as on the stabilities of the complexes. The positions of the CT bands are shifted to shorter wavelengths and the stabilities of the complexes decrease on going from methanol to aqueous. methanol.
Similar content being viewed by others
References
Benesi H A and Hildebrand J H 1949J. Am. Chem. Soc. 71 2703
Bertolotti S G, Cosa J J, Gsponer H E, Hamity M and Previtali C M 1986Can. J. Chem. 64 845
Bertolotti S G, Cosa J J, Gsponer H E, and Previtali C M 1987Can. J. Chem. 65 2425
Carper W R, Hedges R M and Simpson H N 1965J. Phys. Chem. 69 1707
Chandra A K and Mukherjee D C 1964Trans. Faraday Soc. 60 62
Ebbesen I W and Ferrandi G 1983J. Phys. Chem. 87 3717
Fornasiero D and Grieser F 1990J. Chem. Soc, Faraday Trans. 86 2955
Foster R 1969Organic charge transfer complexes (London, New York: Academic Press) p. 207
Foster R and Hammick D I, 1954J. Chem. Soc. 2685
Hoffman M Z, Prasad D R, Jones G and Malba V 1983J. Am. Chem. Soc. 105 6360
Isaacs N S 1966J. Chem. Soc. (B) 1053
Martens F M and Verhoeven J W 1981J. Phys. Chem. 85 1773
Poulos A T, Kelley C K and Simone R 1981J. Phys. Chem. 85 823
Ross S D, Bassin M and Kuntz I 1954J. Am. Chem. Soc. 76 4176
Tsubomura H 1960J. Am. Chem. Soc. 82 40
White B G 1969Trans. Faraday Soc. 65 2000
Yoon K B and Kochi J K 1991J. Phys. Chem. 95 3780
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Padma, P., Vinod Kumar, T., Singh, T.C. et al. Molecular complexes of paraquat with anilines. Proc. Indian Acad. Sci. (Chem. Sci.) 107, 67–72 (1995). https://doi.org/10.1007/BF02841440
Received:
Revised:
Issue Date:
DOI: https://doi.org/10.1007/BF02841440