Reaktionen von Tetrachloroaurat mit verschiedenen Aminen

Nagel, Yvonne A.; Beck, Wolfgang

doi:10.1002/zaac.19855291008

Cited by 17 publications

(13 citation statements)

References 21 publications

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“…The interaction of HAuCl4 with N containing compounds has been shown to occur at the N atom through ligand substitution, which is often accompanied by the reduction of gold ions. [43] Density functional theory studies of the interaction of amino acids and DNA with Au 3 clusters have shown they occur by electron transfer from N, O, and S (from amine, carboxylic, and sulfur groups) to 5d and 6 s orbitals of Au via lone pairs. [44,45] In addition, a nonconventional H-bond between amine and Au, N-H----Au, in which Au acts as a proton acceptor, was identified.…”

Section: Fourier Transform Infrared Spectroscopymentioning

confidence: 99%

Synthesis of gold-polyaniline nanocomposites by complexation

Kabomo

Scurrell

2016

Polym. Adv. Technol.

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Complexation synthesis methods have been examined in the preparation of nanogold–polyaniline systems. This extends work previously reported on the use of a spontaneous redox coupling of aniline polymerization to the reduction of a gold salt added to the monomer and mixed initially at the molecular level. The extension involves the addition of an additional reducing agent in the form of borohydride. The end product of the nanoparticle Au–PANI composite is very much a function of the borohydride : Au and N : Au ratios used in the synthesis. The size of the resulting gold particles can be directly tuned in the diameter range 2–10 nm by adjusting the borohydride : Au ratio used. Thorough characterization of the structures of the composites has been undertaken. Copyright © 2016 John Wiley & Sons, Ltd.

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Section: Fourier Transform Infrared Spectroscopymentioning

confidence: 99%

Synthesis of gold-polyaniline nanocomposites by complexation

Kabomo

Scurrell

2016

Polym. Adv. Technol.

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“…[19] There exists only one gold(i) complex with an NH-aldimine, [AuCl(NHCHnPr)], formed in the reaction between [AuCl 4 ] À and nBuNH 2 . [20] The only reported gold(iii) complexes with imines contain cyclic ketimines (pyridines, pyrazolato, porphyrins, etc.). [21] Here we report a family of gold(i) and gold(iii) complexes with noncyclic ketimines, including acetimine, using two different synthetic methods.…”

Section: Introductionmentioning

confidence: 99%

The First Acetimine Gold(I) and Gold(III) Complexes and the First Acetonine Complexes

et al. 2001

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Ketimino(phosphino)gold(I) complexes of the type [Au[NR=C(Me)R']L]X (X = ClO4, R = H, L = PPh3, R'=Me (la), Et (2a); L=PAr3 (Ar=C6H4OMe-4), R'=Me (1b), Et (2b); L=PPh3, R=R'=Me (3); X= CF3SO3 (OTf), L=PPh3, R=R'=Me (3'); R=Ar, R'=Me (4)) have been prepared from [Au(acac)L] (acac = acetyl acetonate) and ammonium salts [RNH3]X dissolved in the appropriate ketone MeC(O)R'. Complexes [Au(NH=CMe2)2]X (X = C1O4 (6), OTf (6')) were obtained from solutions of [Au(NH3)2]X in acetone. The reaction of 6 with PPN[AuCl2] or with PhICl2 gave [AuCl(NH=CMe2)] (7) or [AuCI2(NH=CMe2)2]ClO4 (8), respectively. Complex 7 was oxidized with PhICl2 to give [AuCl3(NH=CMe2)] (9). The reaction of [AuCl(tht)] (tht = tetrahydrothiophene), NaClO4, and ammonia in acetone gave [Au(acetonine)2]ClO4 (10) (acetonine = 2,2,4,4,6-pentamethyl-2,3,4,5-tetrahydropyrimidine) which reacted with PPh3 or with PPN[AuCl2] to give [Au(PPh3)(acetonine)]ClO4 (11) or [AuCl(acetonine)] (12), respectively. Complex 11 reacts with [Au(PPh3)(Me2CO)]ClO4 to give [(AuPPh3)2(mu-acetonine)](ClO4)2 (13). The reaction of AgClO4 with acetonine gave [Ag(acetonine)(OClO3)] (14). The crystal structures of [Au(NH2Ar)(PPh3)]OTf (5), 6' and 10 have been determined.

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“…Nitrogen ligand coordination compounds of Au 3+ have not been studied extensively [48]. Nagel and Beck [49] have reported that the reaction of AuCl 4 with n-butylamine led to the formation of the imine ClAuNH=R, by a ligand displacement reaction. Additionally Yang et al [50] have reported the binding of the amine group of dodecylamine to Au 3+ [50].…”

Section: Resultsmentioning

confidence: 99%

Template-less and surfactant-free solvent-driven direct synthesis of urchin-like gold nanoparticles in anisole

Poonthiyil

Golovko

Fairbanks

2017

IJNT

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In this study, we present a simple template-less and surfactant-free method for the synthesis of urchin-shaped gold nanoparticles. Anisole, the reaction solvent also acted as the reducing agent. When compared with other harsher solvent-mediated methods for the synthesis of gold nanoparticles, the method presented here allows the formation of nanoparticles at the relatively low temperature of 60°C. The effect of reaction time was studied, and it was observed that the urchin-shaped particles initially formed transformed into smooth-edged particles when the reaction was continued for more than 30 minutes owing to the thermodynamic instability of gold nanourchins. The effect of added capping agents such as dodecanethiol, hexadecylamine and polyvinylpyrrolidone (PVP) was also studied, and it was found that nanoparticles were not formed in their presence. The gold nanosystems obtained in this study were characterised by transmission electron microscopy and UV-visible absorption spectroscopy.

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Reaktionen von Tetrachloroaurat mit verschiedenen Aminen

Abstract: Tetrachloroaurat setzt sich in wäßriger Lösung mit Aminoalkoholen (L) zu den Komplexen [AuIL2][AuIIICl4] um. Mit t‐Butylamin entsteht AuCl3(t‐BuNH2), während mit n‐Butylamin der Imin‐Gold(I)‐Komplex ClAu(NHCH(CH2)2Me) isoliert wurde.

Cited by 17 publications

References 21 publications

Synthesis of gold-polyaniline nanocomposites by complexation

Synthesis of gold-polyaniline nanocomposites by complexation

The First Acetimine Gold(I) and Gold(III) Complexes and the First Acetonine Complexes

Template-less and surfactant-free solvent-driven direct synthesis of urchin-like gold nanoparticles in anisole

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