Synthesis of Two‐Electron Bimetallic Cu–Ag and Cu–Au Clusters by using [Cu13(S2CNnBu2)6(C≡CPh)4]+ as a Template |
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| Authors: | Rhone P. Brocha Silalahi Dr. Kiran Kumarvarma Chakrahari Jian‐Hong Liao Dr. Samia Kahlal Dr. Yu‐Chiao Liu Dr. Ming‐Hsi Chiang Prof. Jean‐Yves Saillard Prof. C. W. Liu |
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| Affiliation: | 1. http://faculty.ndhu.edu.tw/～cwl/index.htm;2. Department of Chemistry, National Dong Hwa University, Hualien, Taiwan R.O.C.;3. Univ Rennes, CNRS, ISCR–UMR 6226, Rennes, France;4. Institute of Chemistry, Academia Sinica, Taipei, Taiwan, R.O.C. |
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| Abstract: | Atomically precise Cu‐rich bimetallic superatom clusters have been synthesized by adopting a galvanic exchange strategy. [Cu@Cu12(S2CNnBu2)6(C≡CPh)4][CuCl2] ( 1 ) was used as a template to generate compositionally uniform clusters [M@Cu12(S2CNnBu2)6 (C≡CPh)4][CuCl2], where M=Ag ( 2 ), Au ( 3 ). Structures of 1 , 2 and 3 were determined by single crystal X‐ray diffraction and the results were supported by ESI‐MS. The anatomies of clusters 1 – 3 are very similar, with a centred cuboctahedral cationic core that is surrounded by six di‐butyldithiocarbamate (dtc) and four phenylacetylide ligands. The doped Ag and Au atoms were found to preferentially occupy the centre of the 13‐atom cuboctahedral core. Experimental and theoretical analyses of the synthesized clusters revealed that both Ag and Au doping result in significant changes in cluster stability, optical characteristics and enhancement in luminescence properties. |
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| Keywords: | bimetallic centered cuboctahedron cluster compounds copper X-ray diffraction |
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