Kratko priopćenje

Complexation of O-Vanillin with Some First Transition Cations in Aqueous Ethanol (70%) Medium

Sanjay Sengupta ; Department of Chemistry, University of Delhi, Delhi-110007, India
Nikhil Ranjan Bannerjee ; Department of Chemistry, University of Delhi, Delhi-110007, India

Sažetak

The present paper summarizes the complexation behaviour
of Mn(II), Co(II), Ni(II), Cu(lI) and Zn(II) with 2-hydroxy-3-methoxybenzaldehyde examined by Crow' s me an diffusion coefficient
method. Diffusion currents of polarographic waves were used to
determine the stability constants of the 1: 1 and 1 : 2 complexes
of the respective ions (298 K) which were 4.0, 2.7; 4.7, 3.3; 5.4, 2.5;
5.3, 3.5 and 4.5, 3.5, respectively. Overall stability constants at
three temperatures 288, 298 and 308 K yielded the thermodynamic
parameters.

Ključne riječi

Hrčak ID:

175805

URI

https://hrcak.srce.hr/175805

Datum izdavanja:

10.10.1989.

Posjeta: 549 *