Molecular Weights of Cyclic and Hollow Clusters Measured by DOSY NMR Spectroscopy

被引：75

作者：

Floquet, Sebastien ^{[1
]}

Brun, Sebastien ^{[1
,5
]}

Lemonnier, Jean-Francois ^{[1
]}

Henry, Marc ^{[2
]}

Delsuc, Marc-Andre ^{[3
,5
]}

Prigent, Yann ^{[4
,5
]}

Cadot, Emmanuel ^{[1
]}

Taulelle, Francis ^{[1
,5
]}

机构：

[1] Univ Versailles St Quent Yvelines, Inst Lavoisier Versailles, UMR 8180, F-78035 Versailles, France

[2] Univ Strasbourg, Inst Le Bel, F-67070 Strasbourg, France

[3] IGBMC, F-67404 Illkirch Graffenstaden, France

[4] Univ Toulouse 3, Toulouse Univ, SFTCM FR 2599, F-31062 Toulouse 9, France

[5] NMRtec, F-67400 Illkirch Graffenstaden, France

来源：

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | 2009年 / 131卷 / 47期

关键词：

OXOTHIOMOLYBDENUM WHEELS; DIFFUSION; RINGS;

D O I：

10.1021/ja9052619

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The Stokes-Einstein expression of the diffusion coefficient as a function of the hydrodynamic radius of the diffusing object does not explicitly carry the mass dependency of the object. It is possible to correlate the translational self-diffusion coefficients D with the molecular weight M for an ensemble of cyclic or hollow clusters ranging from about 200 to 30 000 g.mol(-1). From this correlation, the mass of a cluster can be deduced from its diffusion coefficient. Consistency of diffusion as a power law of mass and Stokes-Einstein formulation is completely fulfilled with the selected compounds of this contribution.

引用

页码：17254 / 17259

页数：6

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