Open AccessEXAFS Structural Determination of the Pt2(P2O5H2)44– Anion in Solution
Author(s) -
Renske M. van der Veen,
Christopher J. Milne,
Van Tuong Pham,
Amal El Nahhas,
Julia A. Weinstein,
Jonathan Best,
Camelia N. Borca,
Christian Bressler,
Majed Chergui
Publication year - 2008
Publication title -
chimia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.387
H-Index - 55
eISSN - 2673-2424
pISSN - 0009-4293
DOI - 10.2533/chimia.2008.287
Subject(s) - extended x ray absorption fine structure , ion , excited state , chemistry , bond length , absorption spectroscopy , atom (system on chip) , diffraction , crystallography , absorption (acoustics) , x ray absorption spectroscopy , ground state , scattering , atomic physics , crystal structure , materials science , physics , optics , organic chemistry , computer science , embedded system , composite material
We present the first structural determination of the Pt2(P2O5H2)44– anion in solution 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) Å and a Pt–P bond length of 2.32(4) Å 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 determining the structure and dynamics of the complex in the 1,3A2u excited states.