Chromatographic Studies on Metal Complexes. Part II. Paper Chromatographic Studies on Copper (II) Mixed Chelates

Inorganic Chemistry Laboratory, The University of Burdwan, West Bengal

Manuscript received 8 April 1974; accepted 11 February 1975

A paper chromatographic study of fifteen copper(II)mixed chelates in aqueous pyridine deve­loper has been made. [Cu(gly)(BigH)]Cl, [Cu(α-alan) (BigH)] CI etc. give two spots in all the developers studied. An equilibrium of the following type is suggested :

                                       2[Cu(gly) (BigH)] C¹ \(\rightleftharpoons\)[Cu (gly)₂] + [Cu (BigH)]₂CI₂

[Cu(gly)(o-phen)[CI also shows similar behaviour. Such disproportionation reaction is less favoured in [Cu(gly)(dipy)]Cl. [Cu(o-phen)(BigH)]CI₂ and [Cu(dipy) (BigH]CI₂ provide single spot on proper choice of the developer