2,4,6‐Triisopropylphenylcopper, a New Tetranuclear Organocopper Aggregate with Unsymmetrically Bridging σ‐π Bonded Aryl Ligands

Abstract

208 0 VCH Verlagsgesellschaff mbH. 0-6940 Weinheim, 1989 0570-0833/89/0202-0208 $ 02.50/0 Angew. Chem. Int. Ed. Engl. 28 (1989) No. 2

Steering Surface Reaction Dynamics with a Self‐Assembly Strategy: Ullmann Coupling on Metal Surfaces

“…Therefore, the DFT calculations imply that these three biphenyls form a clover‐like organometallic complex, with three closely packed Ag atoms in the topmost layer of the substrate serving as the core of the complex. Similar Ag‐ or Cu‐coordinated clusters stabilized by phenyl or phenyl derivatives have been proposed previously . Nevertheless, the CI is rationalized in terms of its energetics according to our DFT calculations.…”

Synthesis, Structure and Properties of Crowded Triarylphosphines

“…Crowded arylcopper(I) reagents such as mesitylcopper(I) [22] and 2,4,6-triisopropylphenylcopper(I) [23] have been structurally characterized and known to work as nucleophiles. Less reactive arylcopper(I) reagents are expected to prefer substitution to reduction of diarylchlorophosphines.…”

Structures and Reactivities of Organocopper Compounds

“…When methyl substituents, as present in [Cu 5 Mesityl 5 ], are replaced by i-Pr groups, the corresponding organocopper compound [CuC 6 H 2 (i-Pr) 3 -2,4,6] becomes tetrameric [65]. If the even more sterically demanding t-Bu groups are subsequently introduced in the presence of DMS, a mononuclear copper compound [CuC 6 H 2 (t-Bu) 3 -2,4,6]ÁDMS is isolated [66].…”