以胆红素(H_2BR)为原料,合成组成为SrBR·2H_2O的胆红素锶,并进行了EXAFS研究,得知胆红素锶的第一配位层包含0和N两种原子,配位数为8,其Sr-O和Sr-N距离分别为2.60A和2.69A。比较H_2BR和SrBR·2H_2O的FT-IR光谱,根据-NH,-COOH和内酰胺等谱带变化,提供了胆红素中含氮和含氧基团与锶配位的证据,与EXAFS实验结果相互一致。 Using bilirubin (H_2BR) as raw material, bilirubin strontium with SrBR · 2H_2O was synthesized and studied by EXAFS. It was found that the first coordination layer of strontium bilirubin contains 0 and N atoms, The number of 8, the Sr-O and Sr-N distance were 2.60A and 2.69A. The FT-IR spectra of H_2BR and SrBR · 2H_2O were compared and the evidences for the coordination between nitrogen and oxygen-containing groups in bilirubin and strontium were provided according to the change of bands such as -NH, -COOH and lactam. The results of EXAFS Consistent with each other.