Synthesis and characterization of coordination compounds of chelating ligands containing imidazole groups. The crystal and molecular structures of the dinuclear copper(I) and copper(II) compounds

Hendriks, H. M. J.; Birker, J. M. W. L.; Rijn, J. Van; Verschoor, G. C.; Reedijk, J.

doi:10.1021/ja00377a012

Cited by 127 publications

(56 citation statements)

References 1 publication

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In the present structures, the weak contact From the magnetic point of view, this pseudo-bridge is out of importance for two mains reasons. Indeed, nitrato anions are known as being unable to support any significant magnetic coupling [27] and the d x2-y2 copper magnetic orbital lies orthogonal to the axial pseudobridge.…”

Section: Discussionmentioning

confidence: 99%

CuLn complexes with a single μ-oximato bridge

Costes

Vendier

2010

Comptes Rendus. Chimie

View full text Add to dashboard Cite

Section: Discussionmentioning

confidence: 99%

CuLn complexes with a single μ-oximato bridge

Costes

Vendier

2010

Comptes Rendus. Chimie

View full text Add to dashboard Cite

“…As "ligand-free" CuAAC reactions have a second order rate law with respect to the concentration of copper ions, [18] the group of Finn has also prepared a "dimerized" version of (BimH) 3 , namely [(BimH) 2 C 2 (BimH) 2 ], [57] but for reasons that are not further discussed in their publication this ligand proved to be an inhibitor of the CuAAC reaction. Although the authors planned to explore "other binucleating systems" in future work, [55] no publication of any synthesis and CuAAC application of molecularly defined dinuclear copper complexes is known to us, except for the TBTA complex reported by Donnelly et al (Scheme 17).…”

Section: Catalysts For Cuaac Reactionsmentioning

confidence: 99%

Highly Active Dinuclear Copper Catalysts for Homogeneous Azide–Alkyne Cycloadditions

et al. 2012

View full text Add to dashboard Cite

It is better to light a candle than to curse the dark. AbstractThe copper-catalyzed azide-alkyne cycloaddition for the synthesis of 1,4-disubstituted 1,2,3-triazoles (CuAAC) is a variant of Huisgen's 1,3-dipolar cycloaddition which disburdens the thermal reaction from its major drawbacks such as poor regioselectivity, long reaction times and harsh conditions. In contrast to the widely used "black box" reagent mixtures, a molecularly defined, highly active catalyst system for homogeneous CuAAC reactions has been developed in this PhD project. In dependence on the postulated stepwise mechanism, its most important structural feature is the presence of two copper(I) ions irreversibly bound in the same catalyst molecule.A highly modular and profitable synthesis for bistriazolium hexafluorophosphate salts as precursors for the ancillary ligand system was devised. In analogy to the CuAAC catalyst systems of general formula [(NHC) 2 Cu]PF 6 described in literature, novel dinuclear copper(I) complexes with a bistriazolylidene ligand backbone and 1,3-bis(2,6-diisopropylphenyl)-imidazol-2-ylidene (IPr) as sacrificial ligand were prepared.However, these complexes did not show the expected high catalytic activity, most probably due to the strong coordination of the IPr ligands. In consequence, another family of dinuclear copper(I) complexes with m-coordinated acetate as labile ligand was synthesized by reaction of the bistriazolium hexafluorophosphate ligand precursors with copper(I) acetate in the presence of a base.The broad applicability and high catalytic activity of one of these bistriazolylidene dicopper acetate complexes was confirmed by a series of gaschromatographically mo-

show abstract

“…The ligands egtb and dtpb were prepared according to the previously reported methods [37,38]. Their dinuclear complexes [Cu 2 (egtb)(ClO 4 (2), and [Co 2 (egtb)Cl 2 ](ClO 4 ) 2 (4) were synthesized and characterized according to our reported procedures [12].…”

Section: Synthesis and Characterizationmentioning

confidence: 99%