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.

引用

页码：287 / 290

页数：4

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