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http://hdl.handle.net/10261/52321
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dc.contributor.author | Lago, Ana Belén | - |
dc.contributor.author | Pasán, Jorge | - |
dc.contributor.author | Cañadillas-Delgado, Laura | - |
dc.contributor.author | Fabelo, Oscar | - |
dc.contributor.author | Ruiz-Pérez, Catalina | - |
dc.date.accessioned | 2012-06-27T09:06:36Z | - |
dc.date.available | 2012-06-27T09:06:36Z | - |
dc.date.issued | 2011 | - |
dc.identifier | doi: 10.1039/c1nj20184k | - |
dc.identifier | issn: 1144-0546 | - |
dc.identifier | e-issn: 1369-9261 | - |
dc.identifier.citation | New Journal of Chemistry 35(9): 1817-1822 (2011) | - |
dc.identifier.uri | http://hdl.handle.net/10261/52321 | - |
dc.description.abstract | Slow diffusion of an ethanolic solution of copper(ii) into an aqueous solution of partially deprotonated malonodihydroxamic acid (H4mdh) affords the pentanuclear complex of formula {[K(H2O) 2]2[Cu5(mmh)4]}n (1) (H3mmh = malonomonohydroxamic acid) which is formed by 12-MC-4 metallacrown units with the fifth copper(ii) ion being placed at the center of the square metallacrown unit. The dianionic pentacopper(ii) planar entity interacts with diaquapotassium(i) counterions through the carboxylate-oxygen atoms resulting in a neutral three-dimensional structure. Magnetic susceptibility measurements in the temperature range 1.9-300 K for 1 show the occurrence of relatively strong antiferromagnetic interactions within the pentanuclear copper(ii) core leading to two degenerated low-lying spin doublets at T < 50 K. X-band EPR spectra at low temperatures give additional support to the ground spin doublet nature. The topology of the pentanuclear copper(ii) unit of 1 together with good ability to mediate magnetic interactions between the copper(ii) ions of the diatomic N-O(oximato) and monoatomic O(oximato) bridges which connect the metal centers within the pentanuclear core account for this magnetic behaviour. © 2011 The Royal Society of Chemistry and the Centre National de la Recherche Scientifique. | - |
dc.description.sponsorship | A.B.L. thanks the Xunta de Galicia for a postdoctoral-fellowship ‘‘Á ngeles Alvariñ o’’. Funding for this work was provided by the Spanish Ministerio de Ciencia e Innovació n through projects MAT2010-16891,MAT2007-60660, CTQ2010-15364, ‘‘Molecular Nanoscience’’ (Consolider-Ingenio CSD2007-00010) and ‘‘Factoría de Cristalización’’ (Consolider-Ingenio2010, CSD2006-00015). J.P. thanks the NANOMAC structural project from the ACIISI for a post-doctoral research contract. | - |
dc.language.iso | eng | - |
dc.publisher | Royal Society of Chemistry (UK) | - |
dc.rights | closedAccess | - |
dc.title | A three-dimensional copper(II) 12-metallacrown-4 complex with malonomonohydroxamic acid (H3mmh) as a ligand | - |
dc.type | artículo | - |
dc.identifier.doi | 10.1039/c1nj20184k | - |
dc.date.updated | 2012-06-27T09:06:36Z | - |
dc.description.version | Peer Reviewed | - |
dc.type.coar | http://purl.org/coar/resource_type/c_6501 | es_ES |
item.languageiso639-1 | en | - |
item.fulltext | No Fulltext | - |
item.openairecristype | http://purl.org/coar/resource_type/c_18cf | - |
item.cerifentitytype | Publications | - |
item.grantfulltext | none | - |
item.openairetype | artículo | - |
Aparece en las colecciones: | (ICMA) Artículos |
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