1,1-Digoldallylium Complexes: Diaurated Allylic Carbocations Indicate New Prospects of the Coordination Chemistry of Carbon
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https://figshare.com/articles/dataset/1_1-Digoldallylium_Complexes_Diaurated_Allylic_Carbocations_Indicate_New_Prospects_of_the_Coordination_Chemistry_of_Carbon/7806125
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资源简介：
Reacting
(NHC)(cyclopropenyl)gold(I) complexes with cationic gold
complexes [(IPr)AuX] afforded extremely reactive allylium-1,1-diido-bridged
digold intermediates. We prove the existence and constitution of this
structure with FT-ICR-MS/MS, NMR, and UV–vis–NIR experiments
and isolated the nucleophilic addition product [(Me)(Ph)(CCHC){Au(IPr)}2(SOMe2)]NTf2 with DMSO. Our computational
investigation unveiled that the bonding situation of this μ-allylium-1,1-diido
digold domain was best described as a three-center–four-electron
bond with a π-backbond. The valence orbitals showed extreme
delocalization and strong π-interactions between the three centers
Au1–C1–Au2. The bridging
carbon atom C1 was best described as trigonal planar sp-hybridized
carbon in this structure. Excitation succeeded in UV–vis–NIR
measurements with energies as low as near-IR radiation.
创建时间：
2019-03-05
