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Great framework variation of polymers in the manganese(II) maleate/alpha,alpha' - Diimine system: Syntheses, structures, and magneto-structural correlation
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2003 (English)In: European Journal of Inorganic Chemistry, ISSN 1434-1948, E-ISSN 1099-1948, no 15, 2872-2879 p.Article in journal (Refereed) Published
Abstract [en]

Three novel manganese(II) coordination polymers, [Mn (maleate)(phen)](n) (1; phen = 1,10-phenanthroline), [Mn-(maleate)(phen)](n).nH(2)O (2), and [Mn(maleate)(bpy)](n) (3; bpy = 2,2'-bipyridine), have been synthesized by treatment of Mn2+ with maleic acid with participation of chelate diimine ligands, and have been identified by single-crystal, X-ray diffraction to have either one-dimensional (1D) zigzag chain structures (1 and 2) or a two-dimensional (2D) sinuous layer structure (3). Each maleate dianion coordinates to three Mn centers, in different bridging modes (syn-anti in 1 and 2, syn-syn and anti-anti in 3). These compounds represent an interesting example of structural topology variation from 1D to 2D mediated by chemically similar auxiliary chelate ligands. Variable-temperature magnetic susceptibility measurements show weak anti-ferromagnetic exchange interactions between the adjacent Mn-II ions, with J = -0.06 cm(-1) (2) and J = -1.3 cm(-1), zJ' = -0.27 cm(-1) (3). The differences in the magnitudes of these coupling interactions agree well with the nature of the carb oxylate-bridging coordination of maleate.

Place, publisher, year, edition, pages
2003. no 15, 2872-2879 p.
Keyword [en]
crystal structure, maleic acid, magnetic properties, manganese, structural topology, magnetic-properties, crystal-structure, coordination polymers, 3-dimensional structure, extended structures, copper(ii) complex, ligand, solids, transformation, molecules
Identifiers
URN: urn:nbn:se:kth:diva-22738ISI: 000184669000018OAI: oai:DiVA.org:kth-22738DiVA: diva2:341436
Note
QC 20100525Available from: 2010-08-10 Created: 2010-08-10 Last updated: 2017-12-12Bibliographically approved

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