EXAFS structural determination of the Pt2(P2O5H2)44- anion in solution
We present the first structural detn. of the Pt2(P2O5H2)44- anion in soln. by analyzing the extended X-ray absorption fine structure (EXAFS) spectrum of the Pt LIII edge. The data could be fit with a simple model involving single and multiple scattering paths to near and far P-atoms, bridging O-atoms, and the other Pt-atom in the binuclear complex. A Pt-Pt distance of 2.876(28) .ANG. and a Pt-P bond length of 2.32(4) .ANG. are obtained. These values are in line with distances found in previous X-ray diffraction studies. The assignment of the EXAFS spectrum of the Pt2(P2O5H2)44- anion in its ground state is required for future time-resolved X-ray absorption measurements with the goal of detg. the structure and dynamics of the complex in the 1,3A2u excited states.
General Physical Chemistry
Laboratoire Spectroscopic Ultrarapide,Ecole Polytechnique Federale de Lausanne,Lausanne,Switz.
written in English.
102532-42-3 Role: PRP (Properties) (EXAFS structural detn. of Pt2(P2O5H2)44- anion in soln.)
Record created on 2006-02-27, modified on 2016-08-08