Substituent-Dependent Azide Addition to Isocyanides Generates Strongly Luminescent Iridium Complexes.

Ligand-centered functionalization reactions offer diverse strategies to prepare luminescent organometallic compounds. These compounds can have unique structures that are not accessible via traditional coordination chemistry and can possess enhanced or unusual photophysical properties. Here we show that bis-cyclometalated iridium bis-isocyanide complexes () react with azide (N) to form novel luminescent structures.

Platinum(II)-Substituted Phenylacetylide Complexes Supported by Acyclic Diaminocarbene Ligands.

We introduce phosphorescent platinum aryl acetylide complexes supported by -butyl-isocyanide and strongly σ-donating acyclic diaminocarbene (ADC) ligands. The precursor complexes -[Pt(CNBu)(C≡CAr)] () are treated with diethylamine, which undergoes nucleophilic addition with one of the isocyanides to form the -[Pt(CNBu)(ADC)(C≡CAr)] complexes (). The new compounds incorporate either electron-donating groups (4-OMe and 4-NMe) or electron-withdrawing groups [3,5-(OMe), 3,5-(CF), 4-CN, and 4-NO] on the aryl acetylide.