What question did this study set out to answer?

This research aims to synthesize and characterize a new cyclometalated platinum(II) complex and study its luminescent properties.

April 12, 2026

Synthesis, Structure, and Luminescence of N-Coordinated Thiocyanate Platinum(II) Complex Stabilized by Halogen Bonds

Key Points

This research aims to synthesize and characterize a new cyclometalated platinum(II) complex and study its luminescent properties.
Synthesis of the platinum(II) complex with thiocyanate and isocyanide ligands.
Structural characterization through crystallization and thermodynamic studies.
Investigation of photophysical properties in solution and solid-state conditions.
The synthesized complex exists as an equilibrium of S- and N-coordinated isomers in solution.
Only the N-isomer is observed in the solid state, forming solvate structures.
Complex I demonstrates green-yellow luminescence in solution and red excimer emission in solid-state.

Abstract

A new cyclometalated platinum(II) complex Pt(ppy)(SCN)(CNC6H3-2-F-4-I) (I, Hppy = 2-phenylpyridine) containing a thiocyanate and an isocyanide ligand is prepared and structurally characterized, its photophysical properties are studied. Complex I in a CDCl3 solution exists as an equilibrium mixture of S- and N-coordinated isomers. In the solid phase, only the N-isomer forming the I·CHCl3 (CCDC 2515278) and I·CH2Cl2 (CCDC 2515279) solvate is detected upon crystallization from CHCl3 or CH2Cl2. In crystals, molecules of I form supramolecular chains stabilized by short Pt⋯Pt metallophilic contacts and I⋯S halogen bonds. Complex I exhibits green-yellow luminescence in the solution and red excimer emission in the solid state.

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Synthesis, Structure, and Luminescence of N-Coordinated Thiocyanate Platinum(II) Complex Stabilized by Halogen Bonds

Key Points

Abstract

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