| Octanuclear Mn(III)(6)Mn(II)Ln (Ln = Gd, Dy and Er) clusters with a novel core topology: syntheses, structures, and magnetic properties. | |
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MedLine Citation:
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PMID: 23377042 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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Reactions of [Mn(6)O(2)(piv)(10)(py)(2.5)(piv)(1.5)], Ln(NO(3))(3)·6H(2)O and N-mdeaH(2) in MeCN in the presence of Me(3)SiCl generated a family of octanuclear Mn/Ln complexes [Mn(6)(III)Mn(II)Ln(N-mdea)(3)(N-mdeaH)(piv)(8)O(2)(OH)(3)(NO(3))(H(2)O)]·xCH(3)CN·xH(2)O [Ln = Gd (), Dy (), Er (), pivH = pivalic acid, N-mdeaH(2) = N-methyl diethanolamine]. Each complex possesses a [Mn(6)(III)Mn(II)Ln(μ(3)-O)(2)(μ(3)-OH)(3)](16+) core containing two butterfly-like subunits of [Mn(3)Ln(μ(3)-OH)(2)] and [Mn(4)(μ(3)-O)(2)] sharing a common vertex, and an outer Mn atom ligated to one of the subunits through a μ(3)-OH(-) ligand. The core topology represents a new Mn/Ln core type. The magnetic susceptibility study of indicates the presence of dominant antiferromagnetic interactions within the complexes. For complex , which contains an isotropic Gd(III) atom, fitting of the obtained M/(Nμ(B)) vs. H/T data gave S = 4, g = 1.90, and D = -0.31 cm(-1). The results were further supported by ac data. Complex exhibits out-of-phase ac susceptibility signals, indicating it may be a SMM. |
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Authors:
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Hui Chen; Cheng-Bing Ma; Ming-Qiang Hu; Hui-Min Wen; Hong-Hua Cui; Jin-Ying Liu; Xiao-Wei Song; Chang-Neng Chen |
Publication Detail:
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Type: JOURNAL ARTICLE Date: 2013-2-4 |
Journal Detail:
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Title: Dalton transactions (Cambridge, England : 2003) Volume: - ISSN: 1477-9234 ISO Abbreviation: Dalton Trans Publication Date: 2013 Feb |
Date Detail:
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Created Date: 2013-2-4 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 101176026 Medline TA: Dalton Trans Country: - |
Other Details:
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Languages: ENG Pagination: - Citation Subset: - |
Affiliation:
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State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, The Chinese Academy of Sciences, Fuzhou, Fujian 350002, China. ccn@fjirsm.ac.cn. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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