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Synthesis and characterization of chromium (III) chelates of some lawsones

Kelkar V.D., Gokhale R.R.

Polish Journal of Chemistry

1998

Vol. 72, nr 4

655-659

Chelates of chromium(III) with phthiocol (3-methyllawsone), lawsone(2-hydroxy-1,4-naphthalenedione), 3-chlorolawsone and their 1-oxime derivatives have been synthesized and characterized. They exhibit the general formula CrL3x3H2O and magnetic moments close to 3.87 B.M. indicating trivalent chromium. IR spectra data suggest that lawsone derivatives exhibit coordinating O^O system, while lawsone 1-oxime derivatives present N^O system. Octahedral geometry for chelates has been suggested.