Luminescent Triphosphine Cyanide d(10) Metal Complexes

Area of Science:

• Coordination chemistry
• Organometallic chemistry
• Materials science

Background:

• Coinage metal cyanides are versatile precursors in coordination chemistry.
• Triphosphine ligands offer unique coordination environments.

Purpose of the Study:

• To synthesize and characterize novel coinage metal cyanide complexes with a triphosphine ligand.
• To investigate the structural, spectroscopic, and photophysical properties of these complexes.
• To explore their potential applications, such as in sensing.

Main Methods:

• Synthesis of M(P(3))CN complexes (M = Cu, Ag, Au).
• Formation of homobimetallic and heterometallic complexes.
• Characterization using X-ray crystallography and NMR spectroscopy.
• Photoluminescence studies and time-dependent density functional theory (TD-DFT) calculations.

Main Results:

• Successfully synthesized and characterized mononuclear, bimetallic, and trinuclear coinage metal cyanide-triphosphine complexes.
• Compounds 1-5 retained their structures in solution, while complex 6 did not.
• The complexes displayed luminescence in the solid state with varying quantum yields.
• Bimetallic copper complexes exhibited high sensitivity to molecular oxygen.

Conclusions:

• The study presents a novel series of coinage metal cyanide complexes with a triphosphine ligand.
• These complexes possess interesting photoluminescent properties.
• The high oxygen sensitivity of copper complexes suggests their utility as oxygen sensors.