PREPARATION AND MAGNETIC PROPERTIES OF THE COPPER(II) MIXED CARBOXYLATES WITH HALOACETATE AND AMMONIOACETATE

Copper(II) mixed carboxylate compounds, CuX(X′CH2COO)(R3NCH2COO)·mH2O (X=C1, Br; X′=F, Cl; R=, CH3), were prepared, and then characterized by means of magnetic susceptibility and IR-spectroscopy. The mixed carboxylates with betaine have the copper(II) acetate-type dinuclear structures. The amount of spin-exchange coupling through betaine bridges was estimated.