Time-Resolved X-ray Scattering of an Electronically Excited State in Solution. Structure of the 3A2u State of Tetrakis-μ-pyrophosphitodiplatinate(II)

被引：107

作者：

Christensen, Morten ^{[1
,2
]}

Haldrup, Kristoffer ^{[1
,2
]}

Bechgaard, Klaus ^{[1
,2
]}

Feidenhans'l, Robert ^{[1
,2
]}

Kong, Qingyu ^{[3
]}

Cammarata, Marco ^{[1
,2
,3
]}

Lo Russo, Manuela ^{[3
]}

Wulff, Michael ^{[3
]}

Harrit, Niels ^{[1
,2
]}

Nielsen, Martin Meedom ^{[1
,2
]}

机构：

[1] Univ Copenhagen, Dept Chem, Ctr Mol Movies, DK-2100 Copenhagen, Denmark

[2] Univ Copenhagen, Niels Bohr Inst, DK-2100 Copenhagen, Denmark

[3] European Synchrotron Radiat Facil, F-38043 Grenoble, France

来源：

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | 2009年 / 131卷 / 02期

关键词：

SPECTROSCOPIC PROPERTIES; BINUCLEAR PLATINUM(II); DIPLATINUM COMPLEX; DIFFRACTION; SPECTRA; PHOSPHORESCENCE; CHEMISTRY; RAMAN; ION;

D O I：

10.1021/ja804485d

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The structure of the (3)A(2u) excited state of tetrakis-mu-pyrophosphitodiplatinate(II) in aqueous solution is investigated by time-resolved X-ray scattering on a time scale from 100 ps to 1 mu s after optical pumping. The primary structural parameter, the Pt-Pt distance, is found to be 2.74 angstrom, which is 0.24 angstrom shorter than the ground-state value. The contraction is in excellent agreement with earlier estimates based on spectroscopic data in solution and diffraction data in the crystalline state. As a second structural parameter, the distance between the P planes in the (3)A(2u) excited state was determined to be 2.93 angstrom, i.e., the same as that in the ground state. This result implies that a slight lengthening of the Pt-P bond occurs following excitation.

引用

页码：502 / 508

页数：7

共 48 条

[1] Between the internuclear distances and force constants of molecules and its application to polyatomic molecules [J].