201. Homoleptic Alkynyl-Protected Gold Nanoclusters: Au44(PhC≡C)28 and Au36(PhC≡C)24.
- Author
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Wan, Xian‐Kai, Guan, Zong‐Jie, and Wang, Quan‐Ming
- Subjects
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HOMOLEPTIC compounds , *GOLD nanoparticles , *CRYSTAL structure , *MICROCLUSTERS , *DIMERS - Abstract
For the first time total structure determination of homoleptic alkynyl-protected gold nanoclusters is reported. The nanoclusters are synthesized by direct reduction of PhC≡CAu, to give Au44(PhC≡C)28 and Au36(PhC≡C)24. The Au44 and Au36 nanoclusters have fcc-type Au36 and Au28 kernels, respectively, as well as surrounding PhC≡C-Au-C2(Ph)Au-C≡CPh dimeric 'staples' and simple PhC≡C bridges. The structures of Au44(PhC≡C)28 and Au36(PhC≡C)24 are similar to Au44(SR)28 and Au36(SR)24, but the UV/Vis spectra are different. The protecting ligands influence the electronic structures of nanoclusters significantly. The synthesis of these two alkynyl-protected gold nanoclusters indicates that a series of gold nanoclusters in the general formula Au x(RC≡C) y as counterparts to Au x(SR) y can be expected. [ABSTRACT FROM AUTHOR]
- Published
- 2017
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