2015
DOI: 10.1002/ange.201502368
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Fluktuierender Kupferacetylid‐Cluster in der CuAAC‐Katalyse

Abstract: Ein molekular definierter Kupferacetylidcluster mit N-heterocyclischen Carben-Steuerliganden (NHC) wurde zum ersten Mal unter sauren Reaktionsbedingungen hergestellt. Dieser Cluster ist der erste molekulare Kupferacetylid-Komplex, der eine hohe Aktivität in der Kupfer-katalysierten AzidAlkin-Cycloaddition aufweist, bei Essigsäurezusatz sogar bei À5 8 8C. [3] und oxidative Kupplungsreaktionen, wie sie von Glaser, [4] Hay, [5] Eglinton [6] sowie von Cadiot und Chodkiewicz entwickelt wurden. [7] Die Forschungsgr… Show more

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Cited by 9 publications
(2 citation statements)
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“…[6a] The average Cu-C bond distance 2.035(2) Å (2a), 2.039(1) Å (2b) is less than the sum of covalent radii for σ bonding alkynes. [23] The values of the four C≡C-C angles of the four acetylide ligands in 2a deviate from linearity by 3°, 9°, 10° and 16°, respectively; whereas in the case of 2b the deviations are only 4°, 5°, 8° and 8°. Similar bonding modes of acetylide ligands have also been observed in other trinuclear copper(I) acetylide complexes.…”
Section: Accepted Manuscriptmentioning
confidence: 98%
See 1 more Smart Citation
“…[6a] The average Cu-C bond distance 2.035(2) Å (2a), 2.039(1) Å (2b) is less than the sum of covalent radii for σ bonding alkynes. [23] The values of the four C≡C-C angles of the four acetylide ligands in 2a deviate from linearity by 3°, 9°, 10° and 16°, respectively; whereas in the case of 2b the deviations are only 4°, 5°, 8° and 8°. Similar bonding modes of acetylide ligands have also been observed in other trinuclear copper(I) acetylide complexes.…”
Section: Accepted Manuscriptmentioning
confidence: 98%
“…Similar bonding modes of acetylide ligands have also been observed in other trinuclear copper(I) acetylide complexes. [23] The cluster shows significant distortions away from the idealized Td symmetry, which could arise from the different electronic and steric requirements of the alkynyl and dtc ligands. 1 H and 13 C NMR spectra show one set of signals illustrating that the molecule is symmetric in solution ( Figure S6-S9).…”
Section: Accepted Manuscriptmentioning
confidence: 99%