Synthese und Struktur von K[Au(AuCl)(AuPPh3)8)](PF6)2

Pethe, J.; Maichle-Mössmer, C.; Strähle, Jasmin

doi:10.1002/(sici)1521-3749(199807)624:7<1207::aid-zaac1207>3.3.co;2-2

Cited by 9 publications

(15 citation statements)

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“…The type of ligand is especially important, because of the different metal‐ligand interactions. To date, AuNCs have been synthesized using thiolates/selenolates, alkynyls, phosphines, or mixed ligands . In particular, a wide range of AuNCs with the thiolate/selenolate ligands have been synthesized and structurally characterized with gold cores ranging from Au 18 to Au 133 , since the first synthesis and structural determination by X‐ray crystallography of the Au 102 cluster using the para ‐mercaptobenzoic acid ligand .…”

Section: Introductionmentioning

confidence: 99%

“…The crystal structures of small phosphine‐protected AuNCs (nuclearity ≤ 13) have been well studied . It is interesting to note that many of these AuNCs, such as Au 6 , Au 7 , Au 8 , Au 9 , Au 10 , and Au 11 , have at least two different core geometries when different phosphine ligands are used. However, beyond Au 13 , only four different phosphine‐protected AuNCs have been structurally characterized by X‐ray crystallography, including Au 14 , Au 20 , Au 22 , and Au 39 .…”

Section: Introductionmentioning

confidence: 99%

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Polymorphism of Phosphine-Protected Gold Nanoclusters: Synthesis and Characterization of a New 22-Gold-Atom Cluster

Zhang

Williard

Wang

2016

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A new Au22 nanocluster, protected by bis(2-diphenyl-phosphino)ethyl ether (dppee or C28 H28 OP2 ) ligand, has been synthsized and purified with high yield. Electrospray mass spectrometry shows that the new cluster has a formula of Au22 (dppee)7 , containing 22 gold atoms and seven dppee ligands. The cluster is found to be stable as a solid, but metastable in solution. The new cluster has been characterized by UV-Vis-NIR absorption spectroscopy, collision-induced dissociation, and (31) P-NMR. The properties of the new cluster have been compared with the previous Au22 (dppo)6 nanocluster (dppo = 1,8-bis(diphenyl-phosphino)octane or C32 H36 P2 ), which contains two fused Au11 units. All the experimental data indicate that the new Au22 (dppee)7 cluster is different from the previously known Au22 (dppo)6 cluster and represents a new Au22 core, which contains most likely one Au11 motif with several Au2 (dppee) or Au(dppee) units. The Au22 (dppee)7 cluster provides a new example of the ligand effects on the nuclearity and structural polymorphism of phosphine-protected atom-precise gold nanoclusters.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Polymorphism of Phosphine-Protected Gold Nanoclusters: Synthesis and Characterization of a New 22-Gold-Atom Cluster

Zhang

Williard

Wang

2016

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“…There are four structurally determined Au 10 nanoclusters in literature.A u 10 (C 6 F 5 ) 4 (PPh 3 ) 5 ], [18] [Au 10 (PPh 3 ) 7 {S 2 C 2 (CN) 2 } 2 ] [19] and [Au 10 Cl 3 (PCy 2 Ph) 6 ](NO 3 ) [20] (Cy = cyclohexyl) show identical skeletal geometry,w here the gold atoms form ah exagonal ring of edge-and face-sharing tetrahedra that share ac ommonc entral vertex. However, K[Au(Au-Cl)(AuPPh 3 ) 8 )](PF 6 ) 2 [21] has ac rown-like centeredA u 8 with additional binding to aA uCl fragment. The Au 10 core in 1 is quite different from these two types of Au 10 structures.T wo silver atoms are installed on two opposite faces of the Au 10 via the ligation of pyridyl groups.…”

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confidence: 99%

An Atomically Precise Au₁₀Ag₂ Nanocluster with Red–Near‐IR Dual Emission

Lei

Guan

Pei

et al. 2016

Chemistry A European J

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A red-near-IR dual-emissive nanocluster with the composition [Au10 Ag2 (2-py-C≡C)3 (dppy)6 ](BF4 )5 (1; 2-py-C≡C is 2-pyridylethynyl, dppy=2-pyridyldiphenylphosphine) has been synthesized. Single-crystal X-ray structural analysis reveals that 1 has a trigonal bipyramidal Au10 Ag2 core that contains a planar Au4 (2-py-C≡C)3 unit sandwiched by two Au3 Ag(dppy)3 motifs. Cluster 1 shows intense red-NIR dual emission in solution. The visible emission originates from metal-to-ligand charge transfer (MLCT) from silver atoms to phosphine ligands in the Au3 Ag(dppy)3 motifs, and the intense NIR emission is associated with the participation of 2-pyridylethynyl in the frontier orbitals of the cluster, which is confirmed by a time-dependent density functional theory (TD-DFT) calculation.

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“…The metal frameworks in [Au(AuNCO)(AuPPh 3 ) 8 ]Cl23 and [Au(AuCl)(AuPPh 3 ) 8 ] + 24 are derived from a square antiprism with a gold atom in the center of the cage. One square‐face of the anti‐prism is capped by the AuNCO or the AuCl moiety.…”

Section: Resultsmentioning

confidence: 99%

Synthesis and Structure of the Decanuclear Gold(I) Cluster Cation [Au8(AuCl)2{μ3-P(tBu)}2{μ-P(tBu)=C(NMe2)2}6]4+ with Bridging Phosphaalkene and Phosphanediide Ligands

Weber

Lassahn

Stammler

et al. 2002

Eur. J. Inorg. Chem.

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Reaction of the inversely polarized phosphaalkene HP=C(NMe2)2 (1) with [AuCl(PPh3)] (2a) in a molar ratio of 2:1 in THF led to the formation of complex [Au{HP=C(NMe2)2}2]Cl (3) as a pale yellow solid. In contrast to this, treatment of 2a with two molar equivalents of tBuP=C(NMe2)2 (4) afforded a mixture of [Au{P(tBu)=C(NMe2)2}2]+Cl− (5) and [{(Me2N)2C=(tBu)PAu}2(μ‐Cl)]+Cl− (6). In CH2Cl2 solution this mixture was slowly converted into the novel decanuclear complex [Au8(AuCl)2{μ3‐P(tBu)}2{μ‐P(tBu)=C(NMe2)2}6]4+(Cl−)4 (7) featuring six edge‐bridging phosphaalkene ligands and two μ3‐tert‐butylphosphanediide ligands. In solution the cluster 7 shows a high order 31P{1H} NMR spectrum of the [AB2C]2 type. According to the X‐ray structural analysis the Au10 framework may be described as a slightly puckered ladder constructed of three quadrangles. The central Au4 parallelogram is capped on both faces by a pair of [tBuPAuCl] units. (© Wiley‐VCH Verlag GmbH, 69451 Weinheim, Germany, 2002)

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Synthese und Struktur von K[Au(AuCl)(AuPPh3)8)](PF6)2

Cited by 9 publications

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Polymorphism of Phosphine-Protected Gold Nanoclusters: Synthesis and Characterization of a New 22-Gold-Atom Cluster

Polymorphism of Phosphine-Protected Gold Nanoclusters: Synthesis and Characterization of a New 22-Gold-Atom Cluster

An Atomically Precise Au₁₀Ag₂ Nanocluster with Red–Near‐IR Dual Emission

Synthesis and Structure of the Decanuclear Gold(I) Cluster Cation [Au8(AuCl)2{μ3-P(tBu)}2{μ-P(tBu)=C(NMe2)2}6]4+ with Bridging Phosphaalkene and Phosphanediide Ligands

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Synthese und Struktur von K[Au(AuCl)(AuPPh3)8)](PF6)2

Cited by 9 publications

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Polymorphism of Phosphine-Protected Gold Nanoclusters: Synthesis and Characterization of a New 22-Gold-Atom Cluster

Polymorphism of Phosphine-Protected Gold Nanoclusters: Synthesis and Characterization of a New 22-Gold-Atom Cluster

An Atomically Precise Au10Ag2 Nanocluster with Red–Near‐IR Dual Emission

Synthesis and Structure of the Decanuclear Gold(I) Cluster Cation [Au8(AuCl)2{μ3-P(tBu)}2{μ-P(tBu)=C(NMe2)2}6]4+ with Bridging Phosphaalkene and Phosphanediide Ligands

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An Atomically Precise Au₁₀Ag₂ Nanocluster with Red–Near‐IR Dual Emission