WEISHIDA from his magnetic studies on Copper Acetate(WSDTY) monohydrate crystal predicted that there is some sort of exchange interaction between adjacent copper atoms. But in the absence of either crystallographic data or diamagnetic dilution data he could not say whether the interaction forces were of Kramers' super-exchange type acting through intermediate oxygen atoms, or whether direct spin interaction occurred.

Later, from an examination of anomalous behaviour of cupric acetate monohydrate towards magnetic susceptibility and paramagnetic resonance absorption, Bleaney and Bowers2 concluded that there is some form of strong coupling between unpaired electrons on adjacent copper atoms through exchange forces. Van Niekerk and Schoening3 from X-ray analysis showed that cupric acetate monohydrate is a new type of complex having the formula Cu2(CH3COO)4.2H2O. The Cu-Cu distance is 2.64 ?, showing that there is direct interaction between the copper ions, because the distance for super exchange of Kramers type (Cu-Cu distance) should be of the order of 4 ?. Figgis and Martin4 have shown that exchange integral J = l.6 kTc, where Tc is critical temperature at which Δχ/δT = 0 (χ being the gram molecular susceptibility).

Wujiang Weishida Copper Technology Co.,Ltd. has 12,000 square meters of production base. By virtue of their sincere cooperation, reciprocity of the business philosophy for the industry users around the country to provide high-quality non-ferrous metal products.Weishida specializes in producing cuprous chloride, basic copper carbonate, copper acetate, copper oxide, copper sulfate.

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