An alkynyl-protected Au40 nanocluster featuring PhC[triple bond, length as m-dash]C-Au-P^P motifs

Chemical Communications : Chem Comm
Ting WangQuan-Ming Wang

Abstract

An alkynyl-protected gold nanocluster [Au40(PhC[triple bond, length as m-dash]C)20(dppm)4](SbF6)4 (dppm = bis(diphenylphosphino)methane) (1) has been synthesized. Single-crystal X-ray diffraction reveals that the cluster has a face-centered cubic (FCC) Au34 kernel that is made up of two Au20 units via sharing a rectangular face. Two linear PhC[triple bond, length as m-dash]C-Au-C[triple bond, length as m-dash]CPh staple motifs are located around the central part of the Au34 core, and four L-shaped PhC[triple bond, length as m-dash]C-Au-P^P staple motifs are located at the four corners of the Au34 core. Cluster 1 and [Au38(PhC[triple bond, length as m-dash]C)20(PPh3)4](CF3SO3)2 both have the FCC Au34 core, and it is found that the diphosphine ligands bringing two more Au atoms into the system have significant effects on the optical properties and stability of the clusters. The combination of a diphosphine ligand and an alkynyl ligand is helpful in generating new ligand-protected metal nanoclusters.

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Citations

Jan 8, 2019·Angewandte Chemie·Mitsuhiro IwasakiKatsuaki Konishi
Jan 12, 2019·Angewandte Chemie·Tatsuya HigakiRongchao Jin
Mar 18, 2020·Advanced Materials·Yingwei LiRongchao Jin
Jul 7, 2020·Dalton Transactions : an International Journal of Inorganic Chemistry·Sebastian KenzlerAndreas Schnepf
Feb 10, 2021·Chemical Reviews·Raquel P Herrera, M Concepción Gimeno
Apr 20, 2021·Inorganic Chemistry·Yang-Lin ShenXing Lu
Nov 5, 2019·Journal of the American Chemical Society·K L Dimuthu M WeerawardeneChristine M Aikens

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Methods Mentioned

BETA
X-ray

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