Synthesis of Diazonium Tetrachloroaurate(III) Precursors for Surface Grafting

Neal, Sabine N.; Orefuwa, Samuel A.; Overton, Atiya T.; Staples, Richard J.; Mohamed, Ahmed A.

doi:10.3390/inorganics1010070

Cited by 15 publications

(11 citation statements)

References 52 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, long term stability has been a major concern. To address this critical point, the group of one of the authors of this review Ahmed Mohamed designed "gold diazonium" salts with a remarkable stability [45,46,155]. Other authors have confirmed the stability of aryldiazonium tosylate salts [149] on the top of their interesting water solubility.…”

Section: Conclusion and Future Prospectsmentioning

confidence: 88%

“…The ionic structures N≡N] 2 ZnCl 4 show the shortest interionic distances between the diazonium and the metalbased anion occur between the halide and the outer diazonium nitrogen than to the ammonium nitrogen. Metal-based aryldiazonium salts structurally characterized so far indicate that the bond order in the diazonium nitrogen-nitrogen is close to a triple bond distance of approximately 1.1 Å.From acetonitrile solvent at room temperature, well-shaped yellow crystals of aryldiazonium tetrachloroaurate(III) salts were obtained[45,46]. The N≡N distance is typical of diazonium, approximately 1.10 Å.…”

mentioning

confidence: 99%

See 1 more Smart Citation

Functionalization of nanomaterials with aryldiazonium salts

Mohamed

Salmi

Dahoumane

et al. 2015

Advances in Colloid and Interface Science

167

137

View full text Add to dashboard Cite

Section: Conclusion and Future Prospectsmentioning

confidence: 88%

mentioning

confidence: 99%

Functionalization of nanomaterials with aryldiazonium salts

Mohamed

Salmi

Dahoumane

et al. 2015

Advances in Colloid and Interface Science

167

137

View full text Add to dashboard Cite

“…Among them, the signal at 58.0 ppm corresponds to O C H 3 carbon, whereas the 103.9 and 169.3 ppm signals correspond to aromatic carbon atoms directly bonded to N 2 + and OMe functional groups, respectively. [ 31 ] After the reaction of the uf ‐MOR with MeOPh‐N 2 + , the acquired 13 C NMR spectrum showed that the chemical shifts of aromatic carbons in MeOPh‐ f ‐MOR are different from those of MeOPh‐N 2 + . They are rather similar to those of MeOPh‐OH (Figure 3b), implying the replacement of the CN 2 + bond by the CO bond via a substitution reaction.…”

Section: Characterization Of Organic‐functionalized Mor Zeolitementioning

confidence: 99%

Post‐Synthesis Functionalization Enables Fine‐Tuning the Molecular‐Sieving Properties of Zeolites for Light Olefin/Paraffin Separations

et al. 2021

View full text Add to dashboard Cite

Zeolite molecular sieves are widely used in gas separation and shape‐selective catalysis, but these applications often require discriminating differences as little as 0.1 Å. Molecular sieving with such size selectivity demands zeolites with highly tunable pore diameters and adsorption properties, which are technically challenging to prepare. Nevertheless, it is shown that a wide range of organic functional groups can be covalently functionalized onto the interior pore walls of the zeolites, MOR, LTL, FAU, and MFI, to systematically “tune” their effective pore diameters with respect to the size of organic groups. For organic functionalization, small and aggressive organic electrophiles are used (e.g., organo‐halide and ‐diazonium) as grafting agents, which are accessible to the intracrystalline void space, forming a C–Ozeolite bond in a reaction with a bridging oxygen as proved by multiple analysis data. It is demonstrated that the post‐functionalization can be used to tailor the molecular sieving action of a parent zeolite to give size‐selective adsorbents for light olefin/paraffin separations. 4‐Methoxybenzene‐functionalized MOR separates ethylene from ethane with an ideal‐adsorbed‐solution‐theory selectivity of ≈5873, whereas toluene‐grafted MOR completely separates propylene/propane mixtures. Therefore, tailoring the molecular‐sieving properties of zeolites by organic functionalization broadens their applications to challenging separations.

show abstract

“…The ability to isolate pure and stable aryldiazonium salts plays an important factor in nanoparticles-aryldiazonium interface progress. However, various stable diazonium salts have been isolated and their X-ray structures have been reported [6,7]. For example, arenediazonium tosylates were prepared using a polymer-supported diazotization agent with p-toluenesulfonic acid.…”

Section: Introductionmentioning

confidence: 99%

Diazonium Gold Salts as Novel Surface Modifiers: What Have We Learned So Far?

2020

View full text Add to dashboard Cite

The challenges of diazonium salts stabilization have been overcome by their isolation as metal salts such as tetrachloroaurate(III). The cleavage of molecular nitrogen from diazonium salts even at very low potential or on reducing surfaces by fine tuning the substituents on the phenyl ring expanded their applications as surface modifiers in forensic science, nanomedicine engineering, catalysis and energy. The robustness of the metal–carbon bonding produced from diazonium salts reduction has already opened an era for further applications. The integration of experimental and calculations in this field catalyzed its speedy progress. This review provides a narrative of the progress in this chemistry with stress on our recent contribution, identifies potential applications, and highlights the needs in this emerging field. For these reasons, we hope that this review paper serves as motivation for others to enter this developing field of surface modification originating from diazonium salts.

show abstract

Synthesis of Diazonium Tetrachloroaurate(III) Precursors for Surface Grafting

Abstract: Abstract:The synthesis of diazonium tetrachloroaurate(III) complexes [R-4-C 6 H 4 N≡N]AuCl 4 involves protonation of anilines

Cited by 15 publications

References 52 publications

Functionalization of nanomaterials with aryldiazonium salts

Functionalization of nanomaterials with aryldiazonium salts

Post‐Synthesis Functionalization Enables Fine‐Tuning the Molecular‐Sieving Properties of Zeolites for Light Olefin/Paraffin Separations

Diazonium Gold Salts as Novel Surface Modifiers: What Have We Learned So Far?

Contact Info

Product

Resources

About