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Controlling the Atomic Structure of Au30 Nanoclusters by a Ligand‐Based Strategy |
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| Authors: | Tatsuya Higaki Chong Liu Chenjie Zeng Renxi Jin Yuxiang Chen Prof. Nathaniel L. Rosi Prof. Rongchao Jin |
| Affiliation: | 1. Department of Chemistry, Carnegie Mellon University, Pittsburgh, PA, USA;2. Department of Chemistry, University of Pittsburgh, Pittsburgh, PA, USA;3. School of Chemistry, Northeast Normal University, Changchun, Jilin, China |
| Abstract: | We report the X‐ray structure of a gold nanocluster with 30 gold atoms protected by 18 1‐adamantanethiolate ligands (formulated as Au30(S‐Adm)18). This nanocluster exhibits a threefold rotationally symmetrical, hexagonal‐close‐packed (HCP) Au18 kernel protected by six dimeric Au2(SR)3 staple motifs. This new structure is distinctly different from the previously reported Au30S(S‐tBu)18 nanocluster protected by 18 tert‐butylthiolate ligands and one sulfido ligand with a face‐centered cubic (FCC) Au22 kernel. The Au30(S‐Adm)18 nanocluster has an anomalous solubility (it is only soluble in benzene but not in other common solvents). This work demonstrates a ligand‐based strategy for controlling nanocluster structure and also provides a method for the discovery of possibly overlooked clusters because of their anomalous solubility. |
| Keywords: | gold ligands nanoclusters nanostructures thiols |