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Mixed-Valent {Mn14} Aggregate Encapsulated by the Inorganic Polyoxometalate Shell: [MnIII13MnIIO12(PO4)4(PW9O34)4]31-.
- Source :
-
Inorganic Chemistry . 2/16/2009, Vol. 48 Issue 4, p1606-1612. 7p. 2 Charts, 5 Graphs. - Publication Year :
- 2009
-
Abstract
- The reaction of [Mn12(CH3COO)16(H2O)4O12] · 2CH3COOH · 4H2O, Na8[HPW9O34] · 24H2O, K2HPO4, and ethylenediamine hydrochloride in an aqueous solution leads to the isolation of a new polyoxometalate-based mixed-valent manganese aggregate, K14Na17[(MnIII13MnIIO12(PO4)4(PW9O34)4)· ~56H2O (1). Single-crystal X-ray diffraction indicates that the polyoxoanion of 1 exhibits a mixed-valent [MnIII13MnII(μ2-O)6(μ3-O)6(μ4-PO4)2(μ5-PO4)2]5+ complex encapsulated by four [B-α-PW9O34]9- trivacant Keggin-type moieties [crystal data for 1: monoclinic, C2/c (No. 15), a = 36.341(7) Å, b = 18.325(4) Å, c = 36.668(7) Å, β = 119.24(3)°, V = 21308(7) Å3 Z = 4]. In a magnetic point of view, all of these paramagnetic manganese aggregates in 1 are well wrapped into the diamagnetic inorganic shells. Variable-temperature, solid-state, direct-current susceptibility measurements show that compound 1 exhibits strong antiferromagnetic interactions inside the [Mn14] core. [ABSTRACT FROM AUTHOR]
- Subjects :
- *CHLORIDES
*MANGANESE
*CRYSTALS
*CHEMICAL reactions
*OPTICAL diffraction
Subjects
Details
- Language :
- English
- ISSN :
- 00201669
- Volume :
- 48
- Issue :
- 4
- Database :
- Academic Search Index
- Journal :
- Inorganic Chemistry
- Publication Type :
- Academic Journal
- Accession number :
- 36612015
- Full Text :
- https://doi.org/10.1021/ic802023h