Au25 nanocluster-catalyzed Ullmann-type homocoupling reaction of aryl iodides.

Au25 nanocluster-catalyzed Ullmann-type homocoupling reaction of aryl iodides.

Chemical communications (Cambridge, England) (2012-11-07)

Gao Li, Chao Liu, Yu Lei, Rongchao Jin

ABSTRACT

The Au(25)(SR)(18)/CeO(2) nanocluster catalyst showed high activity in the homocoupling of aryl iodides (e.g. up to 99.8% yield with iodobenzene) and excellent recyclability.

MATERIALS

Product Number

Brand

Product Description

700290

Sigma-Aldrich

Cerium(IV) oxide, nanopowder, <50 nm particle size (BET), 99.95% trace rare earth metals basis

211575

Sigma-Aldrich

Cerium(IV) oxide, powder, <5 μm, 99.9% trace metals basis

202975

Sigma-Aldrich

Cerium(IV) oxide, powder, 99.995% trace metals basis

544841

Sigma-Aldrich

Cerium(IV) oxide, nanopowder, <25 nm particle size (BET)

289744

Sigma-Aldrich

Cerium(IV) oxide, dispersion, 20 wt. % colloidal dispersion in 2.5% acetic acid, 30-50 nm avg. part. size

22390

Sigma-Aldrich

Cerium(IV) oxide, ≥99.0%

643009

Sigma-Aldrich

Cerium(IV) oxide, dispersion, nanoparticles, <25 nm particle size, 10 wt. % in H₂O