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Synthesis, single crystal X-ray analysis, and TEM for a single-sized Au11 cluster stabilized by SR ligands: The interface between molecules and particles |
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| Authors: | Keiko Nunokawa Mitsuhiro Ito Tetsu Yonezawa Tomoji Ozeki Seiji Watase |
| Affiliation: | a Department of Environmental Technology, Graduate School of Engineering, Nagoya Institute of Technology, Gokiso-cho, Showa-ku, Nagoya 466-8555, Japan b Department of Chemistry, Graduate School of Science, The University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan c Department of Chemistry and Materials Science, Tokyo Institute of Technology, 2-12-1, O-okayama, Meguro-ku, Tokyo 152-8551, Japan d Osaka Municipal Technical Research Institute, 1-6-50, Morinomiya, Joto-ku, Osaka 536-8553, Japan |
| Abstract: | An SR-modified Au cluster with a sub-nanometer size, Au11(S-4-NC5H4)3(PPh3)7 (1), has been synthesized by NaBH4 reduction of Au(S-py)(PPh3) or by reacting [Au9(PPh3)8](NO3)3 with HS-4-py in good yield. Its molecular structure has been elucidated by single crystal X-ray diffraction, and TEM observation has been achieved for the first time for this size of SR-modified Au clusters. The core structure is best described in terms of an incomplete icosahedron. CV measurements in CH2Cl2 have suggested that the cluster does not coagulate in solution with significant concentration. |
| Keywords: | Au-S-py complex Au11 cluster TEM SR-modified Au cluster |
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