Journal of Chemical and Engineering Data, Vol.49, No.4, 907-911, 2004
Charge-transfer complexometric study of ferric ion with 4-chloro-2,6-bis(hydroxymethyl)phenol in a methanol-water system using spectrophotometric and potentiometric methods
Complex formation between ferric ions and 4-chloro-2,6-bis(hydroxymethyl)phenol in 0.3 mole fraction of methanol and 0.10 M tetraethylammoniumbromide as inert ionic medium has been studied at 25.0 degreesC using spctrophotometric and potentiometric methods. This charge-transfer complex has a strong absorbance in 580 run. Ferro ions do not have any significant interaction with this ligand. In both spectrophotometric and potentiometric methods, it was found that only the MLH2 and MLH3 species are formed in the pH range 2.0 to 11.5. The M:L ratio of the complex is also obtained by continuous variation and mole ratio methods, which is equal to 1:1 for this complex.