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Title: | Copper complexes from 3,5-disubstituted N-hydroxyethylpyrazole ligands: Cleavage of C-N bond as well as formation of second coordination sphere complexes |
Author: | Soldevila-Sanmartín, Joan Calvet Pallàs, Maria Teresa Font Bardia, Ma. Mercedes Planas, José Giner Pons, Josefina |
Keywords: | Coure Estructura cristal·lina (Sòlids) Copper Layer structure (Solids) |
Issue Date: | 1-Jan-2022 |
Publisher: | Elsevier Ltd |
Abstract: | 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. |
Note: | Versió postprint del document publicat a: https://doi.org/https://doi.org/10.1016/j.poly.2021.115543 |
It is part of: | Polyhedron, 2022, vol. 211 |
URI: | http://hdl.handle.net/2445/208827 |
Related resource: | https://doi.org/https://doi.org/10.1016/j.poly.2021.115543 |
ISSN: | 0277-5387 |
Appears in Collections: | Articles publicats en revistes (Mineralogia, Petrologia i Geologia Aplicada) |
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