EXAFS structural determination of the Pt2(P2O5H2)44- anion in solution

被引：16
|
作者：
van der Veen, Renske M. [1 ,2 ]
Milne, Christopher J. [1 ]
Pham, Van-Thai [1 ]
El Nahhas, Amal [1 ]
Weinstein, Julia A. [3 ]
Best, Jonathan [3 ]
Borca, Camelia N. [2 ]
Bressler, Christian [1 ]
Chergui, Majed [1 ]
机构：
[1] Ecole Polytech Fed Lausanne, Lab Spect Ultrarapide, CH-1015 Lausanne, Switzerland
[2] Swiss Light Source, Paul Scherrer Inst, CH-5232 Villigen, Switzerland
[3] Univ Sheffield, Dept Chem, Sheffield S3 7HF, S Yorkshire, England
来源：
CHIMIA | 2008年 / 62卷 / 04期
关键词：
diplatinum complexes; EXAFS; molecular structures;
D O I：
10.2533/chimia.2008.287
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
We present the first structural determination of the Pt-2(P2O5H2)(4)(4-) anion in solution by analyzing the extended X-ray absorption fine structure (EXAFS) spectrum of the Pt L-III 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) angstrom and a Pt-P bond length of 2.32(4) angstrom are obtained. These values are in line with distances found in previous X-ray diffraction studies. The assignment of the EXAFS spectrum of the Pt-2(P2O5H2)(4)(4-) 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 (1,3)A(2u) excited states.
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页码：287 / 290
页数：4
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