A cationic gold complex cleaves BArF24

Weber, Simone G.; Zahner, David; Röminger, Frank; Straub, Bernd F.

doi:10.1039/c2cc36171j

Cited by 55 publications

(42 citation statements)

References 38 publications

(39 reference statements)

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…99 The kinetic stability of these perfuctionalized boron clusters is particularly relevant to (cationic) transition metal catalysis, since even the widely used BAr F anion ([B(C 6 F 5 ) 4 ] − ) has been shown to engage in aryl ring transfer in the presence of transition metal cations. 100,101,102 …”

Section: Applications In Catalysis and Materials Chemistrymentioning

confidence: 99%

Synthesis and Applications of Perfunctionalized Boron Clusters

et al. 2018

View full text Add to dashboard Cite

This Viewpoint Article describes major advances pertaining to perfunctionalized boron clusters in synthesis and their respective applications. The first portion of this work highlights key synthetic methods allowing one to access a wide range of polyhedral boranes (B4 and B6 – B12 cluster cores) that contain exhaustively functionalized vertices. The second portion of this Viewpoint showcases the historical developments in using these molecules for applications ranging from materials science to medicine. Lastly, we suggest potential new directions for these clusters as they apply to both synthetic methods and applications.

show abstract

Section: Applications In Catalysis and Materials Chemistrymentioning

confidence: 99%

Synthesis and Applications of Perfunctionalized Boron Clusters

et al. 2018

View full text Add to dashboard Cite

show abstract

“…Tatsächlich ertappte IPr**AuCl auf frischer Tat AgSbF 6 bei der Abstraktion eines Chloridliganden. [14] Trotz (oder gerade wegen) seiner sterischen Abschirmung ist IPr**AuNTf 2 (1) katalytisch hochaktiv in der Hashmi-Phenolsynthese. [14] Trotz (oder gerade wegen) seiner sterischen Abschirmung ist IPr**AuNTf 2 (1) katalytisch hochaktiv in der Hashmi-Phenolsynthese.…”

unclassified

Isolierung eines nicht‐Heteroatom‐stabilisierten Goldcarbens

et al. 2014

Self Cite

View full text Add to dashboard Cite

Goldcarben-Komplexe sind essentielle Intermediate in vielen Gold-katalysierten synthetischen Transformationen. Während Goldcarbene mit direkter, vinyloger oder phenyloger Heteroatomstabilisierung schon synthetisiert und charakterisiert worden sind, waren elektronisch nichtstabilisierte Goldcarbene bislang schwer zu beobachten. Wir haben nun einen sterisch extrem abgeschirmten, smaragdgrünen Komplex [IPr**Au = CMes 2 ] + [NTf 2 ] À synthetisiert, isoliert und vollständig charakterisiert. Sein Absorptionsmaximum bei 642 nm, im Vergleich zu 528 nm des rotpurpurnen Carbokations [Mes 2 CH] + , zeigt klar, dass Gold mehr ist als nur ein "weiches Proton".

show abstract

“…3 The most frequently encountered auxiliary ligands (L') coordinate through nitrogen atoms and include nitriles, amines and pyridines. 4 The choice of the counterion (X) has been traditionally based on the availability of silver(I) salts AgX (X = OTf, OTs, BF 4 , PF 6 , SbF 6 ) that are used to abstract chloride from gold chloride precursors to form cationic gold(I), 5 but with the declining use of these reagents, 6 and the development of silver-free systems, 7 the use of counterions such as phosphate, 8 triflate 9 and borates 10 has been explored as well.…”

Section: Introductionmentioning

confidence: 99%

Inner-Sphere versus Outer-Sphere Coordination of BF₄^– in a NHC-Gold(I) Complex

et al. 2017

View full text Add to dashboard Cite

ABSTRACT:The role of counterions in chemistry mediated by gold complexes stretches much further than merely providing charge balance to cationic gold species. Interplay between their basicities and coordination strengths influences interactions with both the gold center and substrates in catalysis. Actual monogold(I) active species are generally believed to be mono-coordinated species, formed from the abstraction or the decoordination of a second ligand from precursor complexes, but only little experimental evidence exists to underpin the existence of these transient species. The formation of a bench-stable neutral IPr Cl -gold(I) tetrafluoroborate complex is herein reported. Experimental studies by X-ray diffraction analysis, NMR spectroscopy and theoretical studies by DFT calculations were conducted to determine the composition, structure, and behavior of this complex. The absence of an auxiliary ligand resulted in inner-sphere coordination of the counterion in the solid state. In solution, an equilibrium between two conformations was found with the counterion occupying inner-sphere and outer-sphere positions, respectively. Stoichiometric and catalytic reactivity studies with the tetrafluoroborate complex have been conducted. These confirmed the lability of the inner-sphere coordinating counterion that gives the IPr Cl -gold(I) fragment similar behavior to related systems.

show abstract

A cationic gold complex cleaves BArF24

Cited by 55 publications

References 38 publications

Synthesis and Applications of Perfunctionalized Boron Clusters

Synthesis and Applications of Perfunctionalized Boron Clusters

Isolierung eines nicht‐Heteroatom‐stabilisierten Goldcarbens

Inner-Sphere versus Outer-Sphere Coordination of BF₄^– in a NHC-Gold(I) Complex

Contact Info

Product

Resources

About

A cationic gold complex cleaves BArF24

Cited by 55 publications

References 38 publications

Synthesis and Applications of Perfunctionalized Boron Clusters

Synthesis and Applications of Perfunctionalized Boron Clusters

Isolierung eines nicht‐Heteroatom‐stabilisierten Goldcarbens

Inner-Sphere versus Outer-Sphere Coordination of BF4– in a NHC-Gold(I) Complex

Contact Info

Product

Resources

About

Inner-Sphere versus Outer-Sphere Coordination of BF₄^– in a NHC-Gold(I) Complex