Abstract
Complex formation of o-hydroxybenzaldehyde isonicotinoyl hydrazone with Ga III, In III and Tl III has been studied. The thallium complex is unstable. The composition and the instability constants of gallium and indium complexes were determined. Molar absorptivity of gallium complex at 390 nm is 3.40 × 10 4 and that of indium at 380 nm is 3.20 × 10 4 l mole −1 cm −1. Both complexes were found to be rapidly and quantitatively transfered into 1-pentanol. The corresponding aluminum complex is not extracted. Possible analytical application for separation and spectrophotometric determination of these elements is also examined.
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