Interaction Between Iron Research Articles

A spectrophotometric study of Iron (III) Complex of 1‐hydroxy 2‐naphthoic Acid

AbstractThe interaction between iron (III) and 1‐hydroxy 2‐naphthoic acid in pH range 2–5 results in the production of deep blue colour, which exhibits absorption maximum at 620 mμ. The composition and stability of the complex responsible for the appearance of colour has been studied spectrophotometrically at different pH values. Application of JoB's methods, slope ratio method and mole ratio method indicated the formation of 1:1 complex. The stability constant (log k) at pH 2.90 and 3.92 corresponded to 4.20 and 3.90 respectively.

Spectrophotometric Study of Iron‐bis(2‐hydroxymethyl‐5‐hydroxy‐4‐pyrone‐6)‐ketone Complexes

AbstractThe interaction between iron(III) and bis(2‐hydroxymethyl‐5‐hydroxy‐4‐pyrone‐6)‐ketone has been investigated by spectrophotometric methods. Continuous variation and mole ratio curves show evidence that 2:3 and 1:2 complexes are formed. The first step of the reaction involves the formation of an 1:1 complex.

Spectrophotometric Investigation of the Interaction between Iron(II) and Iron(III) in Hydrochloric Acid Solutions1

Spectrophotometric Investigation of the Interaction between Iron(II) and Iron(III) in Hydrochloric Acid Solutions¹