Magnetic properties of dinuclear copper(II) complexes with a N6 pyridazine-derived ligand
Author | dc.contributor.author | Spodine Spiridonova, Evgenia | |
Author | dc.contributor.author | Atria Salas, Ana María | |
Author | dc.contributor.author | Manzur Saffie, Jorge | |
Author | dc.contributor.author | García, Ana | |
Author | dc.contributor.author | Garland, María Teresa | |
Author | dc.contributor.author | Hocquet, Alexandre | |
Author | dc.contributor.author | Sanhueza, Eduardo | |
Author | dc.contributor.author | Baggio, Ricardo | |
Author | dc.contributor.author | Peña, Octavio | |
Author | dc.contributor.author | Saillard, Jean | |
Admission date | dc.date.accessioned | 2018-12-20T15:09:55Z | |
Available date | dc.date.available | 2018-12-20T15:09:55Z | |
Publication date | dc.date.issued | 1997 | |
Identifier | dc.identifier.issn | 03009246 | |
Identifier | dc.identifier.uri | https://repositorio.uchile.cl/handle/2250/158068 | |
Abstract | dc.description.abstract | A new hexadentate ligand 3,6-bis[(6-methyl-2-pyridyl)(2-pyridyl)methyl]pyridazine (mbdpdz) was prepared by a condensation reaction of 3,6-dichloropyridazine and (6-methyl-2-pyridyl)(2-pyridyl)methyllithium, and the following binuclear copper(II) complexes were obtained: [Cu2(mbdpdz)Cl4] 1, [Cu2(mbdpdz)Br4] 2, [Cu2(mbdpdz)Cl2(OH)]Cl 3 and [Cu2(mbdpdz)Br2(OH)]Br 4. The crystal and molecular structures of the two isomorphous complexes 3 and 4 are reported. Both complexes crystallize in the monoclinic system, space group C2/c, with eight formula units per unit cell. Complex 3: a = 28.364(3), b = 13.511(1), c = 16.858(1) Å, β = 109.70(1)°. Complex 4: a = 28.528(5), b = 13.459(2), c = 17.348(3) Å, β = 109.35(1)°. The copper centres in the binuclear cation in 3 and 4 have a square-pyramidal geometry, with a bridging hydroxide angle of 115.1(3) and 116.2(5)° respectively. The Cu · · · Cu distance was 3.251(2) Å in both binuclear complexes. These hydroxo-bridged complexes were obtained by refluxing acetonitrile–water suspensions of 1 and 2, respectively. Variable-temperature magnetic studies on all complexes indicate the existence of antiferromagnetic exchange phenomena. Extended-Hückel calculations were performed on complexes 3 and 4 in order to identify the electronic origin of the spin coupling of these molecules. | |
Lenguage | dc.language.iso | en | |
Source | dc.source | Journal of the Chemical Society - Dalton Transactions | |
Keywords | dc.subject | Chemistry (all) | |
Título | dc.title | Magnetic properties of dinuclear copper(II) complexes with a N6 pyridazine-derived ligand | |
Document type | dc.type | Artículo de revista | |
dcterms.accessRights | dcterms.accessRights | Acceso a solo metadatos | |
Cataloguer | uchile.catalogador | rvh | |
Indexation | uchile.index | Artículo de publicación SCOPUS | |
uchile.cosecha | uchile.cosecha | SI |
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