2 research outputs found
Structural Characterization and Luminescence Properties of a Triphosphine-Stabilized Ag<sub>16</sub>Cu<sub>9</sub> Heterometallic Alkynyl Cluster
No full textA triphosphine-stabilized Ag<sub>16</sub>Cu<sub>9</sub> heterometallic
alkynyl cluster complex was prepared by the reaction of polymeric
silver(I) (4-<i>tert</i>-butylphenyl)acetylide with a copper(I)
dpepp (dpepp = bis(2-(diphenylphosphino)ethyl)phenylphosphine) complex
and characterized by X-ray crystallography. This Ag<sub>16</sub>Cu<sub>9</sub> heterometallic alkynyl complex exhibits an unprecedented
structural topology stabilized by three auxiliary triphosphine ligands.
The (4-<i>tert</i>-butylphenyl)acetylide exhibits five types
of asymmetric bonding modes,
including μ-η<sup>1</sup>, μ-η<sup>1</sup>(σ):η<sup>2</sup>(π), μ<sub>3</sub>-η<sup>1</sup>, μ<sub>3</sub>-η<sup>1</sup>(σ):η<sup>1</sup>(σ):η<sup>2</sup>(π), and η<sup>1</sup>-μ<sub>4</sub>. This Ag<sub>16</sub>Cu<sub>9</sub> complex
exhibits visible to near-infrared luminescence in both fluid CH<sub>2</sub>Cl<sub>2</sub> solution and the solid state
Efficient copper-catalyzed N-arylation of NH-containing heterocycles and sulfonamides with arenediazonium tetrafluoroborates
No full text<p>A practical copper-catalyzed N-arylation of NH-containing heterocycles with arenediazonium tetrafluoroborates has been developed using CuCl as catalyst and K<sub>2</sub>CO<sub>3</sub> as additive under ligand-free conditions. This reaction system has wide substrate scope including imides, 1<i>H</i>-pyrazole, 1<i>H</i>-tetrazoles, 1,2-benzisothiazol-3(2<i>H</i>)-one, and related sulfonamides and gives moderate to excellent yields (up to 95%) of the desired products. This strategy is very general, simple, environmentally friendly, and tolerant of oxygen.</p
