金属ヌクレオチド錯体の研究(第7報) 5'-シチジル酸金属錯体の単離およびその赤外線吸収スペクトル
1972 年 92 巻 9 号 p. 1166-1169
詳細
1972 年 92 巻 9 号 p. 1166-1169
Complexes of 5'-cytidylic acid (5'-CMP) with zinc, lead, cobalt, cadmium, and manganese were isolated as crysta11ine precipitate, and mercury and silver complexes were isolated as amorphous ones from the so1ution of pH 3.2-6.5. Ratio of metal. to ligand was found to be 1 : 1 except in Ag-5'-CMP and Hg-5'-CMP, whose compositions were 2 : 1 and 3 : 2, respectively. The infrared spectra of these complexes were compared with those of sodium, potassium, calcium, ahd barium salts of 5'-CMP. Metal coordination to the phosphate group was suggested from the infrared absorption band near 980 cm-1. Coordination of mercury, cobalt, zinc, and cadmium with the cytosine ring moiety was also assumed from the spectral changes in the region of 1700-1600 cm-1, compared with those of salts of 5-'CMP and cytosine-metal complexes isolated.
