Formation Constants of some Bivalent Metal Ion Chelates of N(2-hydroxy-1-naphthalidene) Anthranilic Acid (Schiff Base)

R. K. Mehta 1 , V. C. Singhi 1  and R. K. Gupta 1
  • 1 Department of Chemistry, University of Jodhpur, Jodhpur (India)

Protonation constants (log K1H and log K2H) of the Schiff base derived from 2-hydroxy-1-naphthaldehyde and anthranilic acid and, the formation constants of certain bivalent metal ion chelates have been determined potentiometrically in 50 per cent (vol./vol.) dioxan solutions (μ= 0.1 м NaClO4). The stabilities of these metal chelates are in the order, UO2 > Cu > Ni > Co > Zn > Cd, in which the sequence of those of first transitional metal ion chelates are in agreement with Irving and Williams order.

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Zeitschrift für Naturforschung B is an international scientific journal which publishes original papers, microreviews, and letters from all areas of inorganic chemistry, solid state chemistry, coordination chemistry, molecular chemistry, and organic chemistry.