The synthesis of unsymmetrical, disubstituted quinoline-based N^N ligands was achieved using a range of isatin reagents. Subsequent complexation within heteroleptic Ir(III) leads to the formation of luminescent complexes which emit ca. 675 nm.
Artikel
Piano‐Stool Ruthenium N‐Heterocyclic Carbene Complexes for gem‐Specific Catalytic Dimerization of Terminal Alkynes
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A series of piano-stool Ru-NHC (NHC=N-heterocyclic carbene) complexes with various levels of steric congestion have been used as precatalysts in the catalytic dimerization of terminal alkynes. The most congested complexes of this series give 100 % gem-enyne products at ambient temperature when activated with a base.
Abstract
A series of piano-stool Ru−NHC (NHC=N-heterocyclic carbene) complexes have been prepared and characterized. The NHC ligands used herein have varying wingtip groups, showing the impact of steric congestion on the selectivity for the catalytic dimerization of terminal alkynes.
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