Synthesis of Small Tetranuclear Cu(I) Metallacycles Based on Bridging Pseudohalogenide Ions

Three new ‘short’ metallacycles are selectively obtained from the reaction of a bimetallic Cu^I ‘U-shape’ molecular clip with, respectively, the cyano CN^–, tricyanomethanide C­(CN)₃^–, and azido N₃^– pseudohalogenide ions. These supramolecular assemblies have been characterized by spectroscopic methods, single-crystal X-ray diffraction, and elemental analysis. The single-crystal X-ray structures of these complexes reveal no short contact interaction between the pseudohalogenide ions within these self-assembled structures despite the short Cu^I···Cu^I distances within the molecular clips. The formation of these discrete metallacycles is rationalized by analyzing the structural features of the Cu^I ‘U-shape’ molecular clip

Synthesis of Small Tetranuclear Cu(I) Metallacycles Based on Bridging Pseudohalogenide Ions

Three new ‘short’ metallacycles are selectively obtained from the reaction of a bimetallic Cu^I ‘U-shape’ molecular clip with, respectively, the cyano CN^–, tricyanomethanide C­(CN)₃^–, and azido N₃^– pseudohalogenide ions. These supramolecular assemblies have been characterized by spectroscopic methods, single-crystal X-ray diffraction, and elemental analysis. The single-crystal X-ray structures of these complexes reveal no short contact interaction between the pseudohalogenide ions within these self-assembled structures despite the short Cu^I···Cu^I distances within the molecular clips. The formation of these discrete metallacycles is rationalized by analyzing the structural features of the Cu^I ‘U-shape’ molecular clip

Dibenzophosphapentaphenes: Exploiting P Chemistry for Gap Fine-Tuning and Coordination-Driven Assembly of Planar Polycyclic Aromatic Hydrocarbons

A synthetic route to planar P-modified polycylic aromatic hydrocarbons (PAHs) is described. The presence of a reactive σ³,λ³-P moiety within the sp²-carbon scaffold allows the preparation of a new family of PAHs displaying tunable optical and redox properties. Their frontier molecular orbitals (MOs) are derived from the corresponding phosphole MOs and show extended conjugation with the entire π framework. The coordination ability of the P center allows the coordination-driven assembly of two molecular PAHs onto a Au^I ion

Ruthenium-Vinylhelicenes: Remote Metal-Based Enhancement and Redox Switching of the Chiroptical Properties of a Helicene Core

Introducing metal-vinyl ruthenium moieties onto [6]­helicene results in a significant enhancement of the chiroptical properties due to strong metal–ligand electronic interactions. The electro-active Ru centers allow the achievement of the first purely helicene-based redox-triggered chiroptical switches. A combination of electrochemical, spectroscopic, and theoretical techniques reveals that the helicene moiety is a noninnocent ligand bearing a significant spin density

Ruthenium-Vinylhelicenes: Remote Metal-Based Enhancement and Redox Switching of the Chiroptical Properties of a Helicene Core

Introducing metal-vinyl ruthenium moieties onto [6]­helicene results in a significant enhancement of the chiroptical properties due to strong metal–ligand electronic interactions. The electro-active Ru centers allow the achievement of the first purely helicene-based redox-triggered chiroptical switches. A combination of electrochemical, spectroscopic, and theoretical techniques reveals that the helicene moiety is a noninnocent ligand bearing a significant spin density

Benzofuran-fused Phosphole: Synthesis, Electronic, and Electroluminescence Properties

A synthetic route to novel benzofuran-fused phosphole derivatives <b>3</b>–<b>5</b> is described. These compounds showed optical and electrochemical properties that differ from their benzothiophene analog. Preliminary results show that <b>4</b> can be used as an emitter in OLEDs, illustrating the potential of these new compounds for opto-electronic applications

Benzofuran-fused Phosphole: Synthesis, Electronic, and Electroluminescence Properties

A synthetic route to novel benzofuran-fused phosphole derivatives <b>3</b>–<b>5</b> is described. These compounds showed optical and electrochemical properties that differ from their benzothiophene analog. Preliminary results show that <b>4</b> can be used as an emitter in OLEDs, illustrating the potential of these new compounds for opto-electronic applications

Benzofuran-fused Phosphole: Synthesis, Electronic, and Electroluminescence Properties

A synthetic route to novel benzofuran-fused phosphole derivatives <b>3</b>–<b>5</b> is described. These compounds showed optical and electrochemical properties that differ from their benzothiophene analog. Preliminary results show that <b>4</b> can be used as an emitter in OLEDs, illustrating the potential of these new compounds for opto-electronic applications

Benzofuran-fused Phosphole: Synthesis, Electronic, and Electroluminescence Properties

A synthetic route to novel benzofuran-fused phosphole derivatives <b>3</b>–<b>5</b> is described. These compounds showed optical and electrochemical properties that differ from their benzothiophene analog. Preliminary results show that <b>4</b> can be used as an emitter in OLEDs, illustrating the potential of these new compounds for opto-electronic applications

Benzofuran-fused Phosphole: Synthesis, Electronic, and Electroluminescence Properties

A synthetic route to novel benzofuran-fused phosphole derivatives <b>3</b>–<b>5</b> is described. These compounds showed optical and electrochemical properties that differ from their benzothiophene analog. Preliminary results show that <b>4</b> can be used as an emitter in OLEDs, illustrating the potential of these new compounds for opto-electronic applications