Αποτελέσματα Αναζήτησης
27 Ιουλ 2021 · Furthermore, the NBO analysis (second-order perturbation theory) revealed an orbital contribution to the Au⋅⋅⋅H−C hydrogen bond, which consists of three donor-acceptor interactions between occupied orbitals at gold (two d-orbitals as well as σ Au-P) and the σ*(C−H) orbital.
L1 features two sets of doublets in the 31P{1H}-NMR spectrum at 31.7 and @7.3 ppm, with acoupling constant of 2J PP =106.8 Hz, while L4 displays resonances at 31.5 and 1.5 ppm with aslightly smaller coupling constant of 2J PP = 105.7 Hz. In addition to the obtained new ligands, L1 and L4, we targeted acompletely arene-free CyYPhos derivative,to
27 Ιουλ 2021 · While arene-gold interactions have repeatedly been reported as critical structural feature in many high-performance gold catalysts, we herein report that these interactions can also be replaced by...
24 Αυγ 2023 · Herein we report on an experimental and mechanistic DFT computational study on the directing role played by Au⋅⋅⋅H−C and Au⋅⋅⋅H + −N bonding interactions along the minimum energy reaction pathway of the catalysed A 3 -coupling reaction for the synthesis of propargylamines.
18 Σεπ 2017 · Herein we demonstrate an example of spectroscopically identified hydrogen bonding interaction of C–H units to Au atoms in divalent hexagold clusters ( [Au 6] 2+) decorated by diphosphine...
To rationalize the conformation found in crystals of (triphenylphosphine)dibenzoylmethylgold(I) a conspicuous Au⋯H–C contact has been discussed, the closest approach (Au⋯H 2.607, Au⋯C 3.413 Å; Au⋯H–C 129.02°) being found for an aryl group of the dibenzoylmethyl unit (64).
21 Νοε 2017 · Here, we describe the transient stabilization of very small gold subnanoclusters (Au n , n < 5) by alkyl chains or aromatic groups appended to the reactive π bond of simple alkynes.
