Copper complexes circular structures

In structure-elucidation studies manifold use of physical methods such as IR-and NMR-spectroscopy °", Reeves s Copper complexing method and X-ray crystallographic analysis are employed, supplemented by circular dichroism C-NMR (CMR)-spectroscopy and mass spectroscopic studies "Chemical work mainly serves the purpose of preparing suitable derivatives or definite fragments via methanolysis and mercaptanolysis, of the molecules. 

The most often studied complexes of MT with metals are complexes of zinc, copper and cadmium ions. Nuclear magnetic resonance (NMR) [3, 5], circular dichroism, and ultraviolet absorption spectroscopy [4, 121] are enabling to study the structure of these complexes. 

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