New Pt→M (M = Ag or Tl) complexes based on anionic cyclometalated Pt(ii) complexes

Area of Science:

• Coordination Chemistry
• Materials Science
• Organometallic Chemistry

Background:

• Anionic cyclometalated platinum complexes serve as versatile precursors.
• Donor-acceptor metal-metal bonds are key to constructing complex architectures.

Purpose of the Study:

• To synthesize heteropolynuclear platinum-silver and platinum-thallium complexes.
• To investigate the influence of bridging ligands on complex nuclearity and structure.
• To explore the structural diversity of platinum-thallium complexes.

Main Methods:

• Reaction of anionic cyclometalated platinum complexes with silver and thallium salts.
• Structural characterization of the resulting heteropolynuclear complexes.

Main Results:

• Synthesis of octanuclear and tetranuclear Pt-Ag complexes, with structure dictated by bridging ligands (e.g., cyano, pyridine-2-thiolate).
• Formation of diverse Pt-Tl complexes with varying nuclearity and geometric arrangements (discrete, chain-like).
• Structural variability in Pt-Tl complexes attributed to labile Pt-Tl bonds and thallium's secondary interactions.

Conclusions:

• The bridging ability of ligands significantly controls the nuclearity and structure of Pt-Ag complexes.
• Platinum-thallium complexes exhibit remarkable structural diversity due to bond lability and thallium's coordination behavior.
• These findings open avenues for designing novel metal-metal bonded materials with tunable architectures.