The luminescence attenuation in the solid state by fluoride anion entrapped in the one-dimensional Zn(II) dioximate and mononuclear Cd(II) dioxime compounds
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COROPCEANU, Eduard, CROITOR, Lilia, SIMINEL, Anatolii, CHUMAKOV, Yurii, FONARI, Marina. The luminescence attenuation in the solid state by fluoride anion entrapped in the one-dimensional Zn(II) dioximate and mononuclear Cd(II) dioxime compounds. In: Polyhedron, 2016, nr. 109, pp. 107-114. ISSN 0277-5387. DOI: https://doi.org/10.1016/j.poly.2016.01.043
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Polyhedron
Numărul 109 / 2016 / ISSN 0277-5387 /ISSNe 1873-3719

The luminescence attenuation in the solid state by fluoride anion entrapped in the one-dimensional Zn(II) dioximate and mononuclear Cd(II) dioxime compounds

DOI:https://doi.org/10.1016/j.poly.2016.01.043

Pag. 107-114

Coropceanu Eduard12, Croitor Lilia3, Siminel Anatolii3, Chumakov Yurii34, Fonari Marina3
 
1 Institute of Chemistry of the Academy of Sciences of Moldova,
2 Tiraspol State University,
3 Institute of Applied Physics, Academy of Sciences of Moldova,
4 Gebze Technical University
 
 
Disponibil în IBN: 27 februarie 2020


Rezumat

On the way to adsorptive materials with extended metal-dioxime platform three metal–organic compounds were obtained from the systems Zn(II)/Cd(II)−1,2-cyclohexanedionedioxime−bipyridine-like ligand by variation of starting salts and bipyridine ligands, and their structures were confirmed by single crystal X-ray diffraction. The crystalline solids include one-dimensional coordination polymers {[Cd(HCOO)2(nioxH2)(bpp)]·0.25H2O)}n (1), {[Zn(nioxH2)(nioxH)(bpe)]·[F]·dmf}n (2), and mononuclear complex [Cd(nioxH2)3]·[F]2 (3), where nioxH2 = 1,2-cyclohexanedionedioxime; bpe = 1,2-bis(4-pyridyl) ethane; bpp = 1,3-bis(4-pyridyl) propane; dmf = N,N′-dimethylformamide. Compound 2 represents the unique example of 1D cationic coordination polymer with an extended Zn(II) – dioxime/dioximate equatorial platform, and the charge balancing by fluoride anion entrapped in the metal second coordination sphere. Both compounds 2 and 3 with the fluoride entrapping in the metals’ second coordination spheres reveal the luminescence attenuation, and might be further studied as luminescent probes for fluoride anion in the solid state. DFT calculations have been performed to elucidate the nature of studied emissive states involved in luminescence of 1, 2 and 3.

Cuvinte-cheie
Anion sensors, coordination polymers, crystal structure, Fluoride, Luminescence quenching