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2022-01-01

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Si us plau utilitzeu sempre aquest identificador per citar o enllaçar aquest document: https://hdl.handle.net/2445/208827

Copper complexes from 3,5-disubstituted N-hydroxyethylpyrazole ligands: Cleavage of C-N bond as well as formation of second coordination sphere complexes

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Recurs relacionat

https://doi.org/https://doi.org/10.1016/j.poly.2021.115543

Resum

The coordination behaviour of two N,O-hybrid hydroxyethylpyrazole ligands, 2-(3,5-diphenyl-1H-pyrazol-1-yl)ethanol, HL1; and (2-(3,5-di(2-pyridyl)-1H-pyrazol-1-yl)ethanol, HL2; with CuCl2·2H2O and Cu(NO3)2·3H2O were studied. Four copper complexes: [CuCl(µ-L1)]2·HL1 (1), [CuCl2(HL2)]·H2O (2A), [Cu(NO3)(3,5-hdppz)(µ-L1)]2·2CH3CN (3), (3,5-hdppz = 3,5-diphenylpyrazole) and [Cu(H2O)(3,5-dpypz)]2(NO3)2·H2O (4), (3,5-dpypz = 3,5-(2-pyridyl)pyrazolate) were isolated and characterized by analytical methods and spectroscopical studies. From their crystal structure, a Npz-C bond cleavage was observed for HL1 and HL2 upon reaction with Cu(NO3)2·3H2O, yielding the unexpected complexes 3 and 4, respectively. Overall, these complexes provided great structural diversity, as dimers (asymmetric and symmetric), monomers and ionic complexes were obtained. Finally, magnetic susceptibility measurements for 3 were carried out, showing the dependence of the magnetic moment on Cu-O-Cu angles.

Matèries

Coure, Estructura cristal·lina (Sòlids)

Matèries (anglès)

Copper, Layer structure (Solids)

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Articles publicats en revistes (Mineralogia, Petrologia i Geologia Aplicada)

Citació

SOLDEVILA-SANMARTÍN, Joan, et al. Copper complexes from 3,5-disubstituted N-hydroxyethylpyrazole ligands: Cleavage of C-N bond as well as formation of second coordination sphere complexes. Polyhedron. 2022. Vol. 211. ISSN 0277-5387. [consulted: 6 of August of 2026]. Available at: https://hdl.handle.net/2445/208827

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