STRUCTURE OF AMORPHOUS PLATINUM URIDINE GREEN SULFATE BY AWAXS AND EXAFS

Amorphous platinum uridine green sulfate was studied using anomalous w ide-angle X-ray scattering and X-ray absorption techniques. Experiment s were made with synchrotron radiation in the vicinity of the Pt L-III absorption edge. The experimental results agree with a mixture model where the major components are mono-and dinuclear Pt complexes. The in tramolecular Pt-Pt distance of 3 Angstrom and the shortest intermolecu lar Pt-PI distances of 5.1 and 7.3 Angstrom were determined from the a pproximative regularized Pt-Pt partial, radial distribution function. The shortest average Pt-O and Pt-N distance of 2.03 Angstrom was obtai ned from the EXAFS data.