There exists a large literature on the spectroscopic properties of copper(II) com- 9 pounds. This is due to the simplicity of the d electron configuration, the

There exists a large literature on the spectroscopic properties of copper(II) com- 9 pounds. This is due to the simplicity of the d electron configuration, the

The rare earths have a unique place among the elements. Although very much alike chemically and in most phy~ical properties they each have very different and st

Transition metal and rare earth compounds are investigated intensively because of important questions concerning fundamental research problems. More recently al

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