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Substituent and solvent effects on the UV/vis absorption spectra of 5-(3-and 4-substituted arylazo)-4,6-dimethyl-3-eyano-2-pyridones
(Elsevier Science Bv, Amsterdam, 2006)
Absorption spectra of seventeen 5-(3- and 4-substituted arylazo)-4,6-dimethyl-3-cyano-2-pyridones have been recorded in 12 protic and aprotic solvents in the range 200-600 nm. The effects of substituents on the absorption ...