Organosilicon compounds containing monovalent gold

Schmidbaur, Hubert; Shiotani, Akinori

doi:10.1021/ja00726a067

Cited by 49 publications

(7 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Two gold compounds, [AuN(SiMe 3 ) 2 NHC] (1) (NHC = 1,3-diisopropyl-imidazolidin-2-ylidene) and [AuN(SiMe 3 ) 2 (PMe 3 )] 46 (2) were synthesized by salt metathesis from their corresponding metal chloride species with lithiated hexamethyldisilazide in yields of 55 % and 90 % respectively. Compound 1 was purified by sublimation (100 ºC, 120 mTorr) and obtained as a pale yellow solid which could be handled in ambient conditions but was moisture sensitive.…”

Section: Resultsmentioning

confidence: 99%

Surfactant Directed Growth of Gold Metal Nanoplates by Chemical Vapor Deposition

et al. 2015

View full text Add to dashboard Cite

Surface-supported, low-dimensional gold nanostructures are of interest for plasmonic applications. Low dimensional nanostructures are readily accessible by solution-phase growth, where shape control through the addition of growthdirecting surfactants is well established. Yet, shape control in chemical vapour deposition (CVD) has not been well explored, and metallic gold films are typically limited to nanoparticulate or thin film morphologies. This article describes the self-seeded growth of high aspect ratio gold plates and wires by CVD. A directed growth mechanism is proposed, where growth is directed by the coordinating N-heterocyclic carbene (NHC) and phosphine ligands originating from the thermal decomposition of the two gas-phase precursors, [Au(HMDS)(NHC)] (HMDS = hexamethyldisilazide, NHC = 1,3-diisopropyl-imidazolidin-2-ylidene) and [Au(HMDS)(PMe 3 )]. These ligands acted as transient surfactants for plate growth between 370 and 460°C and at high precursor flux. Energy dispersive X-ray spectroscopy (EDS) and X-ray photoelectron spectroscopy (XPS) evidence indicates that hydroxyl terminated substrate surfaces are passivated with trimethylsilyl (TMS) moieties originating from the HMDS ligand in both precursors, which promoted island type growth and directed precursor decomposition to occur on gold surfaces. Secondary nucleation is observed on all gold structures, and is a crucial component to gas-phase surfactant-mediated CVD growth. This work identifies the potential to use precursor-bound coordinative ligands or gas-phase surfactants to direct growth of metal nanocrystals by CVD.

show abstract

Section: Resultsmentioning

confidence: 99%

Surfactant Directed Growth of Gold Metal Nanoplates by Chemical Vapor Deposition

et al. 2015

View full text Add to dashboard Cite

show abstract

“…For Au, however, no well defined silicates have been detected, neither for the standard oxidation states I or III, nor for the more unusual II or V (Schmidbaur & Dash, 1982). With the aid of phosphine donor ligands at gold(I) centres and with alkylsilanols as pseudo-silicate components, the first examples of complex molecules with a discrete Au---O---Si bond system could be synthesized and characterized by analytical and spectroscopic data, as well as by a screening of the chemical reactivity (Schmidbaur & Shiotani, 1970). No structural data have been available to date; therefore, the present study of the title compound, (I), was undertaken to provide information on the molecular geometry of such species.…”

Section: Commentmentioning

confidence: 99%

(Methyldiphenylphosphine)(trimethylsiloxy)gold(I)

Bauer¹,

Schier²,

Schmidbaur³

1995

Acta Crystallogr C

View full text Add to dashboard Cite

“…However, the ligand syntheses for 26 and 27 are time-consuming and only produce mediocre precursors for Au, although the Cu(I) analogue of 26 has superb thermal properties. 36 35,37,38 is a dimeric gold(I) guanidinate, 26 39,40 is an iminopyrrolidinate complex, and 27 41 is a bicyclic amidinate, 28, 42,43 29, 44 and 30 43 are trialkylphosphine and N-heterocyclic carbene complexes of gold(I) bis(trimethylsilyl)amide. a Calculated from Clausius-Clapeyron data, method unknown.…”

Section: Guanidinate Amidinate Amide and N-heterocyclic Carbene Complexes Of Gold(i)mentioning

confidence: 99%

“…Au(I) compounds previously used in CVD. Compound 2535,37,38 is a dimeric gold(I) guanidinate, 2639,40 is an iminopyrrolidinate complex, and 2741 is a bicyclic amidinate, 28,42,43 29,44 and 3043 are trialkylphosphine and N-heterocyclic carbene complexes of gold(I) bis(trimethylsilyl)amide.…”

mentioning

confidence: 99%