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http://hdl.handle.net/2445/128584
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DC Field | Value | Language |
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dc.contributor.author | Uzelac, Marina | - |
dc.contributor.author | Borilović, Ivana | - |
dc.contributor.author | Amores, Marco | - |
dc.contributor.author | Cadenbach, Thomas | - |
dc.contributor.author | Kennedy, Alan R. | - |
dc.contributor.author | Aromí Bedmar, Guillem | - |
dc.contributor.author | Hevia, Eva | - |
dc.date.accessioned | 2019-02-20T15:43:02Z | - |
dc.date.available | 2019-02-20T15:43:02Z | - |
dc.date.issued | 2016-02-24 | - |
dc.identifier.issn | 0947-6539 | - |
dc.identifier.uri | http://hdl.handle.net/2445/128584 | - |
dc.description.abstract | By exploring co-complexation reactions between the manganese alkyl Mn(CH2SiMe3)2 and the heavier alkalimetal alkyls M(CH2SiMe3) (M=Na, K) in a benzene/hexane solvent mixture and in some cases adding Lewis donors (bidentate TMEDA, 1,4-dioxane, and 1,4-diazabicyclo[2,2,2] octane (DABCO)) has produced a new family of alkali-metal tris(alkyl) manganates. The influences that the alkali metal and the donor solvent impose on the structures and magnetic properties of these ates have been assessed by a combination of X-ray, SQUID magnetization measurements, and EPR spectroscopy. These studies uncover a diverse structural chemistry ranging from discrete monomers [(TMEDA) 2MMn(CH2SiMe3)3] (M=Na, 3; M=K, 4) to dimers [{KMn- (CH2SiMe3)3·C6H6}2] (2) and [{NaMn(CH2SiMe3)3}2(dioxane)7] (5); and to more complex supramolecular networks [{NaMn(CH2SiMe3)3}1] (1) and [{Na2Mn2(CH2SiMe3)6- (DABCO)2}1] (7)). Interestingly, the identity of the alkali metal exerts a significant effect in the reactions of 1 and 2 with 1,4-dioxane, as 1 produces coordination adduct 5, while 2 forms heteroleptic [{(dioxane)6K2Mn2(CH2SiMe3)4(O(CH2)2- OCH=CH2)2}1] (6) containing two alkoxide-vinyl anions resulting from a-metalation and ring opening of dioxane. Compounds 6 and 7, containing two spin carriers, exhibit antiferromagnetic coupling of their S=5/2 moments with varying intensity depending on the nature of the exchange pathways. | - |
dc.format.extent | 12 p. | - |
dc.format.mimetype | application/pdf | - |
dc.language.iso | eng | - |
dc.publisher | Wiley-VCH | - |
dc.relation.isformatof | Versió postprint del document publicat a: https://doi.org/10.1002/chem.201504956 | - |
dc.relation.ispartof | Chemistry-A European Journal, 2016, vol. 22, num. 14, p. 4843-4854 | - |
dc.relation.uri | https://doi.org/10.1002/chem.201504956 | - |
dc.rights | (c) Wiley-VCH, 2016 | - |
dc.source | Articles publicats en revistes (Química Inorgànica i Orgànica) | - |
dc.subject.classification | Manganès | - |
dc.subject.classification | Metalls alcalins | - |
dc.subject.classification | Magnetisme | - |
dc.subject.other | Manganese | - |
dc.subject.other | Alkali metals | - |
dc.subject.other | Magnetism | - |
dc.title | Structural and magnetic diversity in alkali-metal manganate chemistry: evaluating donor and alkali-metal effects in co-complexation processes | - |
dc.type | info:eu-repo/semantics/article | - |
dc.type | info:eu-repo/semantics/acceptedVersion | - |
dc.identifier.idgrec | 660737 | - |
dc.date.updated | 2019-02-20T15:43:02Z | - |
dc.rights.accessRights | info:eu-repo/semantics/openAccess | - |
dc.identifier.pmid | 26916525 | - |
Appears in Collections: | Articles publicats en revistes (Química Inorgànica i Orgànica) |
Files in This Item:
File | Description | Size | Format | |
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660737.pdf | 1.54 MB | Adobe PDF | View/Open |
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