通过 1H NMR 扩散有序光谱和小角 X 射线散射揭示的单纳米级团簇物种。
Single nanoscale cluster species revealed by 1H NMR diffusion-ordered spectroscopy and small-angle X-ray scattering.
机构信息
Department of Chemistry and Materials Science Institute, University of Oregon, Eugene, Oregon 97403-1253, USA.
出版信息
Angew Chem Int Ed Engl. 2012 Oct 29;51(44):10992-6. doi: 10.1002/anie.201206386. Epub 2012 Oct 10.
A solved structure: The hydrated Ga(13) cluster, Ga(13)(μ(3)-OH)(6)(μ-OH)(18)(H(2)O)(24)(15)], persists as a discrete nanoscale structure in an aqueous polar solvent at millimolar concentration. SAXS data confirm the presence of Ga(13) in dimethyl sulfoxide (DMSO). In aqueous [D(6)]DMSO (1)H NMR signals for the hydroxo and aquo ligands of Ga(13) were detected, thus showing a cluster with a hydrodynamic radius of (11.2±0.8) Å (see picture).
已解决的结构
水合 Ga(13) 簇，Ga(13)(μ(3)-OH)(6)(μ-OH)(18)(H(2)O)(24)(15)]，在毫摩尔浓度的水相中以离散的纳米级结构存在。小角 X 射线散射 (SAXS) 数据证实 Ga(13)存在于二甲基亚砜 (DMSO) 中。在水合 [D(6)]DMSO 中，检测到 Ga(13)的羟和水配体的 1H NMR 信号，从而表明该簇具有(11.2±0.8) Å 的流体力学半径（见图）。
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