Diphosphine-Stabilized Small Gold Nanoclusters: From Crystal Structure Determination to Ligation-Driven Symmetry Breaking and Anion Exchange Properties,Journal of the American Chemical Society

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Diphosphine-Stabilized Small Gold Nanoclusters: From Crystal Structure Determination to Ligation-Driven Symmetry Breaking and Anion Exchange Properties
Journal of the American Chemical Society ( IF 14.4 ) Pub Date : 2016-11-28 , DOI: 10.1021/jacs.6b10168
Liao-Yuan Yao ₁ , Vivian Wing-Wah Yam ₁

Affiliation

A new class of small gold nanoclusters with molecular characteristics has been constructed using 1,1'-bis(diphenylphosphino)ferrocene (dppf) as the stabilizing ligand. The identities of the small gold nanoclusters have been fully characterized by NMR, electrospray ionization mass spectrometry, elemental analysis, and single-crystal X-ray diffraction analysis. Octa- and undecagold clusters are found to display different UV-vis absorption behavior. The ligation of the bidentate ligands and halides or pseudohalides has resulted in the symmetry breaking of these nanoclusters with C1 symmetry. The small gold nanoclusters with different coordinating halides or pseudohalides show distinct reactivities and stabilities in ligand/anion exchange experiments. The current research has provided insights into the origin of chirality in the diphosphine-stabilized small gold nanoclusters.

中文翻译：

二膦稳定的小金纳米团簇：从晶体结构测定到连接驱动的对称性破坏和阴离子交换特性

使用1,1'-双(二苯基膦)二茂铁(dppf)作为稳定配体构建了一类具有分子特征的新型小金纳米团簇。小金纳米团簇的特性已通过核磁共振、电喷雾电离质谱、元素分析和单晶 X 射线衍射分析得到充分表征。发现八金和十一金团簇表现出不同的紫外-可见吸收行为。双齿配体和卤化物或拟卤化物的连接导致这些具有 C1 对称性的纳米团簇的对称性破坏。具有不同配位卤化物或拟卤化物的小金纳米团簇在配体/阴离子交换实验中显示出不同的反应性和稳定性。

更新日期：2016-11-28

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