Monoarsine-protected icosahedral cluster [Au₁₃(AsPh₃)₈Cl₄]⁺: comparative studies on ligand effect and surface reactivity with its stibine analogue

Abstract

Ligand shell of gold nanoclusters play important roles in regulating their molecular and electronic structures. However, the impact of the homologous analogue of the protecting ligands remains elusive due to...

Divergent catalytic behaviors of assembled organogold(i) clusters derived from enyne cyclization

“…In view of the open structure of 2b relative to the closed architecture of 2c , we speculate that the gold atoms in 2b may also be accessible as a Lewis acid. 45–49 We then employed 2b to activate the σ-aurated substrate 1b . The 1 H NMR monitoring showed gradual disappearance of the alkenyl proton doublets of 1b at 5.73 and 5.39 ppm (Fig.…”

Design of Support Effect in the Catalytic Application of Ligand‐Protect Gold Clusters

“…Atomically precise gold (Au n ) clusters protected by organic ligands recently, have highly attracted relative researchers, [ 1‐11 ] and provided an exciting development opportunity in catalysis owing to their unexpected catalytic properties. [ 12‐14 ] Compared with well‐developed nanoparticles, Au n clusters have an advanced effect of definite atomic arrangement, [ 15 ] quantum size effect, and unique surface structure, which provide excellent catalytic models and impart details of reaction steps on metallic atomic surfaces in homogeneous catalysis.…”

Effect of Specific Heavy Doping of Silver Atoms into the Icosahedral Au13 on Electronic Structure and Catalytic Performance

“…The electronic structures and properties of icosahedral M 13 units, as superatomic structural units, have been extensively studied and modified through ligand and alloy engineering, leading to diverse performance outcomes. − For instance, various monophosphine-protected clusters such as [Au 13 (PMe 2 Ph) 10 Cl 2 ] 3+ , [Au 13 (PMePh 2 ) 8 Cl 4 ] + , [Au 13 (POct 3 ) 8 Cl 4 ] + (POct 3 = trioctylphosphine), [Au 13 (L) 8 Cl 4 ] + [L = P­(CH 2 CH 2 CO 2 CH 3 ) 3 ], and [Au 13 (Sb/AsPh 3 ) 8 Cl 4 ] + , as well as polyligand-protected clusters like [Au 13 (dppe) 5 Cl 2 ]­Cl 3 , [Au 13 [( R )-L] 5 Cl 2 ]­Cl 3 , [Au 13 ( S,S -DIOP) 4 X 4 ] + , Au 13 (dppe) 5 (CCPh) 2 3+ , and [Au 13 (NHC) 9 Cl 3 ] 2+ , have been reported with varying electronic structures and optical properties. In terms of alloy engineering, elements such as Pd, Pt, Rh, and Ir are typically doped into the core of the icosahedron while Ag is commonly doped into specific surface positions within the M 13 kernel due to the different affinities of surface motifs. , Notable examples include [Au 9 Ag 4 (Dppb) 4 Cl 4 ] + and [Au 19 Ag 6 (MeOPhS) 17 (PPh 3 ) 6 ]­(BF 4 ) 2 . , However, the investigation of specific heavy doping of silver atoms into icosahedral Au 13 clusters with enhanced ligand protection and their associated electronic structures and properties has been somewhat limited.…”