Copper boryl species {have been|happen to be|have already been} {widely|extensively|broadly} invoked as reactive intermediates in Cu-catalysed C−H borylation reactions, but their isolation and study {have been|happen to be|have already been} {challenging|difficult}. Use {of the|from the|in the|on the|with the|of your} robust dinucleating ligand DPFN ({2|two},7-bis(fluoro-di(2-pyridyl)methyl)-1,8-naphthyridine) {allowed|permitted} for the isolation of two {very|extremely|really|quite|incredibly|pretty} thermally {stable|steady} dicopper(I) boryl complexes, [(DPFN)Cu2(µ-Bpin)][NTf2] ({2|two}) and [(DPFN)Cu2(µ-Bcat)][NTf2] ({4|four}) (pin = {2|two},3-dimethylbutane-2,3-diol; cat = benzene-1,2-diol). These complexes {were|had been|have been} {prepared|ready} by cleavage {of the|from the|in the|on the|with the|of your} corresponding diborane {via|by way of|through|by means of} reaction {with the|using the|with all the|together with the} alkoxide [(DPFN)Cu2(µ-OtBu)][NTf2] ({3|three}). Reactivity {studies|research} illustrated the exceptional stability {of these|of those} boryl complexes (thermal stability in {solution|answer|remedy|resolution|option} {up to|as much as} {100|one hundred} °C) and their {role|function|part} {in the|within the|inside the} activation of C(sp)−H bonds. X-ray diffraction and computational {studies|research} {provide|offer|supply|give|present|deliver} a detailed description {of the|from the|in the|on the|with the|of your} bonding and electronic structures in these species, and {suggest|recommend} that the dinucleating character {of the|from the|in the|on the|with the|of your} naphthyridine-based ligand is largely {responsible|accountable} for their {remarkable|outstanding|exceptional} stability. 156311-83-0 Data Sheet (+)-Sparteine Chemscene PMID:23880095
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