Miniatura

Fitxers

681449.pdf (816.14 KB)

Tipus de document

Article

Versió

Versió acceptada

Data de publicació

2018-01-08

Tots els drets reservats

Si us plau utilitzeu sempre aquest identificador per citar o enllaçar aquest document: https://hdl.handle.net/2445/154820

Structure, magnetic properties and DFT calculations of azido-copper(II) complexes with different azido-bonding, nuclearity and dimensionality

Títol de la revista

Autors

Director/Tutor

ISSN de la revista

Títol del volum

Recurs relacionat

https://doi.org/10.1039/c7nj04150k

Resum

Four bridged-azido Cu(II) complexes were synthesized and structurally characterized: [Cu-2(Et(3)en)(2)(mu(1,1)-N-3)(2)(N-3)(2)] (1), [Cu-2(ip(2)en)(2)(mu(1,1)-N-3)(2)(N-3)(2)] (2), catena-[Cu-2(Et(2)Meen)(2)(mu(1,3)-N-3)(3)]ClO4 (3) and catena-[Cu(ambza)(mu(1,1,3)-N-3)(2)] (4), where Et(3)en = N, N, N'-triethyl-1,2-diaminoethane; ip(2)en = N, N'-diisopropyl-1,2-diaminoethane; Et(2)Meen = N, N-diethyl-N'-methyl-1,2-diaminoethane; and ambza = 2-aminobenzylamine. Single crystal X-ray crystallography revealed that complexes 1 and 2 are dinuclear with doubly bridged mu(1,1)-N-3, whereas complexes 3 and 4 constitute polymeric species with an alternative sequence of single and double mu(1,3)-N-3 bridges for 3 with a 1D chain, and triple mu(1,1,3)-bridging azide in 4 with a 2D extended structure. Variable temperature magnetic susceptibilities over the temperature range of 2-298 K revealed a weak antiferromagnetic coupling (J = -1.8 cm(-1)) for 1, and a ferromagnetic coupling with J values of 7.0 and 7.7 cm(-1), respectively, for complexes 2 and 4, respectively. Compound 3 shows a new topology for Cu(II) alternating chains [Cu(1)(mu(1,3)-N-3)(2)Cu(1')]-(mu(1,3)-N-3)-[Cu(2')(mu(1,3)-N-3)(2)Cu(2 '')]-(mu(1,3)-N-3)-[Cu(1)(mu(1,3)-N-3)(2)Cu(1')]-... Three different coupling constants were obtained through a fitting procedure and by DFT calculations.

Matèries

Lligands, Estructura cristal·lina (Sòlids)

Matèries (anglès)

Ligands, Layer structure (Solids)

Citació

Col·leccions

Articles publicats en revistes (Química Inorgànica i Orgànica)

Citació

MASSOUD, Salah s., HENARY, Maher m., MAXWELL VILLACORTA, Lindley andrés, MARTIN, Alejandro, RUIZ SABÍN, Eliseo, VICENTE CASTILLO, Ramón, FISCHER, Roland c., MAUTNER, Franz a.. Structure, magnetic properties and DFT calculations of azido-copper(II) complexes with different azido-bonding, nuclearity and dimensionality. _New Journal of Chemistry_. 2018. Vol. 42, núm. 4, pàgs. 2627-2639. [consulta: 21 de gener de 2026]. ISSN: 1144-0546. [Disponible a: https://hdl.handle.net/2445/154820]

Exportar metadades

JSON - METS

Compartir registre