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12767187

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pubmed-article:12767187pubmed:issue11lld:pubmed
pubmed-article:12767187pubmed:dateCreated2003-5-27lld:pubmed
pubmed-article:12767187pubmed:abstractTextThe title compound, (NEt(4))[[Mn(salen)](2)Fe(CN)(6)] (1), was synthesized via a 1:1 reaction of [Mn(salen)(H(2)O)]ClO(4) with (NEt(4))(3)[Fe(CN)(6)] in a methanol/ethanol medium (NEt(4)(+) = tetraethylammonium cation, salen(2)(-) = N,N'-ethylenebis(salicylidene)iminate). The two-dimensional layered structure of 1 was revealed by X-ray crystallographic analysis: 1 crystallizes in monoclinic space group P2(1)/c with cell dimensions of a = 12.3660(8) A, b = 15.311(1) A, c = 12.918(1) A, beta = 110.971(4) degrees, Z = 2 and is isostructural to the previously synthesized compound, (NEt(4))[[Mn(5-Clsalen)](2)Fe(CN)(6)] (5-Clsalen(2-) = N,N'-ethylenebis(5-chlorosalicylidene)iminate; Miyasaka, H.; Matsumoto, N.; Re, N.; Gallo, E.; Floriani, C. Inorg. Chem. 1997, 36, 670). The Mn ion is surrounded by an equatorial salen quadridentate ligand and two axial nitrogen atoms from the [Fe(CN)(6)](3-) unit, the four Fe[bond]CN groups of which coordinate to the Mn ions of [Mn(salen)](+) units, forming a two-dimensional network having [[bond]Mn[bond]NC[bond]Fe[bond]CN[bond]](4) cyclic repeating units. The network is spread over the bc-plane of the unit cell, and the layers are stacked along the a-axis. The countercation NEt(4)(+) is located between the layers. Compound 1 is a ferrimagnet with T(c) = 7.7 K and exhibits hysteresis with a remnant magnetization of 13.44 cm(3).mol(-1) (M/N mu(B) = 2.4) at zero field and a coercivity of 1000 Oe when the powder sample was measured at 1.9 K. Magnetic measurements of a direction-arranged single crystal were also carried out. The orientation of the crystallographic axes of a selected single crystal was determined by X-ray analysis, and magnetization was measured when an external field was applied in the a*, b, and c directions. The magnetization in the a* direction increased more easily than those in the b and c directions below the critical temperature. No hysteresis was observed only for the measurement in the a* direction, indicating the presence of strong structural anisotropy with potential anisotropy on Mn(III) ions.lld:pubmed
pubmed-article:12767187pubmed:languageenglld:pubmed
pubmed-article:12767187pubmed:journalhttp://linkedlifedata.com/r...lld:pubmed
pubmed-article:12767187pubmed:statusPubMed-not-MEDLINElld:pubmed
pubmed-article:12767187pubmed:monthJunlld:pubmed
pubmed-article:12767187pubmed:issn0020-1669lld:pubmed
pubmed-article:12767187pubmed:authorpubmed-author:MiyasakaHitos...lld:pubmed
pubmed-article:12767187pubmed:authorpubmed-author:YamashitaMasa...lld:pubmed
pubmed-article:12767187pubmed:authorpubmed-author:MatsumotoNaoh...lld:pubmed
pubmed-article:12767187pubmed:authorpubmed-author:SugiuraKen-ic...lld:pubmed
pubmed-article:12767187pubmed:authorpubmed-author:IedaHidenoriHlld:pubmed
pubmed-article:12767187pubmed:issnTypePrintlld:pubmed
pubmed-article:12767187pubmed:day2lld:pubmed
pubmed-article:12767187pubmed:volume42lld:pubmed
pubmed-article:12767187pubmed:ownerNLMlld:pubmed
pubmed-article:12767187pubmed:authorsCompleteYlld:pubmed
pubmed-article:12767187pubmed:pagination3509-15lld:pubmed
pubmed-article:12767187pubmed:year2003lld:pubmed
pubmed-article:12767187pubmed:articleTitleStructure and magnetic properties of the two-dimensional ferrimagnet (NEt4)[[Mn(salen)]2Fe(CN)6]: investigation of magnetic anisotropy on a single crystal.lld:pubmed
pubmed-article:12767187pubmed:affiliationDepartment of Chemistry, Graduate School of Science, Tokyo Metropolitan University, and Structural Ordering and Physical Properties, PRESTO, Japan Science and Technology Corporation, Hachioji, Tokyo 192-0397, Japan. miyasaki@comp.metro-u.ac.jplld:pubmed
pubmed-article:12767187pubmed:publicationTypeJournal Articlelld:pubmed
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