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Copper(II), Nickel(II) and Cobalt(II) Complexes of Dibasic Tridentate Schiff Bases
Author(s) -
Agrawal A.K.,
Agrawal Sanjeev,
Singh Nepal,
Kansal B.D.
Publication year - 1982
Publication title -
journal of the chinese chemical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.329
H-Index - 45
eISSN - 2192-6549
pISSN - 0009-4536
DOI - 10.1002/jccs.198200018
Subject(s) - chemistry , salicylaldehyde , dibasic acid , stoichiometry , cobalt , nickel , copper , nitrobenzene , inorganic chemistry , schiff base , ligand (biochemistry) , metal , thermogravimetric analysis , octahedron , crystallography , polymer chemistry , crystal structure , organic chemistry , biochemistry , receptor , catalysis
Complexes of Cu(II), Ni(II) and Co(II) with the Schiff bases derived from o ‐aminobenzoic acid with salicylaldehyde and its 5‐chloro and 5‐bromo derivatives have been prepared. The 1:1 (metal‐ligand) stoichiometry of these complexes is shown by elemental analysis, gravimetric estimations and conductometric titrations while the structures of the complexes are proved by i.r. spectra and thermogravimetric analysis. The magnetic susceptibility and electronic spectra of Cu(II) complexes indicate the nonplanar binuclear structures while that of Ni(II) and Co(II) show their paramagnetic octahedral geometry. The molar conductance values in nitrobenzene indicate the nonelectrolytic behaviour of the complexes. The results show that the complexes of the type (Cu·L) 2 , Ni·L·3H 2 O and Co·L·3H 2 O are formed having solvent molecule in coordination with the metal ion. The monopyridine and monoammonia adducts of Cu(II) complexes were found to be monomeric.