Abstract
The compound [Cu(C 4H 5N 3O) 4]Cl 2·2DMA (DMA = N,N-dimethyl-acetamide) has been prepared in DMA-water solution from the parent compound Cu(cyt) 2Cl 2 (cyst = cytosine), already described, and characterized by X-ray diffraction. The cytosine compound was obtained in an attempt to synthesize the ternary cytosine-creatinine (creat) complex. In the first stage of the reaction in methanol, the yellow Cu(creat) 2Cl 2 complex is obtained which reacts finally with cytosine yielding the 1:4 Cu-cyt complex, the creatinine being completely displaced by cytosine. The [Cu(cyt) 4]Cl 2·2DMA complex has been characterized by X-ray crystallography. IR and electronic spectral data of the compound are discussed and related to the copper binding mode derived from the crystal structure determination.
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