ISSN: 2249–9504
CAS CODEN: IJPCDX

STUDIES ON FORMATION CONSTANT OFCo(II),Ni(II),Cr(III) AND Fe(III)ION COMPLEXES WITH SOME HETEROCYCLES BYpH-METRICALLY, SPECTROPHOTOMETRICALLY AND REFRACTOMETRICALLY

Abstract

Author(s): UP. Meshram1*, BG. Khobragade2, ML. Narwade3and HS.Chandak4

Spectrophotometric investigation of Co(II), Ni(II) and Cr(III) and Fe(III) complexes with 3-(2-hydroxy-3-nitro-4-methylphenyl)5-phenylisoxazole (L1) , 3-(2-hydroxyl-4-methyl phenyl)-5-phenyl isoxazoline (L2), 1-phenyl-3-(2-hydroxy-3-bromo-4-methyl phenyl)-5-phenyl pyrazole (L3), showed 1:1 and 1:2 complex formation between the pHrange of 3.0 to 6.0 studied by Job's variation method at 0.1M ionic strength and 30°C ±1°C spectrophotometrically. The conditionalstability constants are determined for 1:1 complexes at pH3.0 and molar refraction and polarizibility constant for L1, L2& L3at different percentage of dioxane have also been calculated.

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