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There is a need to develop rapidly responsive chemical sensors for the detection of lowconcentrations of volatile organic solvents (VOCs). Platinum pincer complexes have shown promise as sensors because of their colours and vapochromic and solvatochromic properties, that may be related to the non-covalent interactions between the pincer complexes and the guest VOCs. Here we report an investigation into a series of Pt(II) complexes based on the 1,3-di(pyridine)benzene tridentate (N^C^N) skeleton with the formula [Pt(N^C(R)^N)(CN)] (R = C(O)Me 2, C(O)OEt 3, C(O)OPh 4) with the fourth coordination site occupied by a cyanide ligand. Solid-state samples of the complexes have been tested with a range of volatiles including methanol, ethanol, acetone, dichloromethane and water, and while 2 displays thermochromism, 3 and 4 display rapidly reversible vapochromism and solvatochromism. These results are correlated with X-ray powder and single crystal Xray structural data including an assessment of the crystal packing and the void space in the crystalline space. The cyanide ligand and the R substituents are involved in hydrogen bonding that creates the voids within the structures and interact with thesolvent molecules that influence the Pt/Pt separation in the crystalline state.
|Early online date||9 Feb 2023|
|Publication status||Published - 26 Apr 2023|
- pincer ligands
- Crystal structure analysis
ASJC Scopus subject areas
- Inorganic Chemistry
FingerprintDive into the research topics of 'Structural modifications to platinum(II) pincer complexes resulting in changes in their vapochromic and solvatochromic properties'. Together they form a unique fingerprint.
- 1 Finished
Applying Long-Lived Metastable States in Switchable Functionality via Kinetic Control of Molecular Assembly
Raithby, P., Burrows, A., Carbery, D., Marken, F., Parker, S., Walsh, A. & Wilson, C.
Engineering and Physical Sciences Research Council
1/11/12 → 30/04/18
Project: Research council