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Spin Frustration and Long-Range Ordering in an AlB2-Iike Metal-Organic Framework with Unprecedented N,N,N-Tris-tetrazol-5-yl-amine Ligand.
- Source :
-
Inorganic Chemistry . 5/18/2009, Vol. 48 Issue 10, p4536-4541. 6p. 2 Diagrams, 1 Chart, 4 Graphs. - Publication Year :
- 2009
-
Abstract
- Solvothermal treatment of a mixture of Co(OAc)2, NaN3, NaN(CN)2, HF, MeCN, and H2O generated an AlB2-like metal-organic framework, namely, [{(CO3F)3(trta)2(H2O)9}{Co(Hbta)3}2]· 11H2O (1) (H3trta = N,N,N-tris-tetrazol-5-yl-amine; H3bta = N,N-bis-tetrazol-5-yl-amine), in which supertrianglar supramolecular building blocks (SBBs) {(Co3F)3(trta)2} act as 12-connected nodes of hexagonal prisms. The unprecedented ligand N,N,N-tris-tetrazol-5-yl-amine is in situ generated via metal-assisted reactions of NaN(CN)2, MeCN, and NaN3, and a possible mechanism involves both 1,3-dipolar cycloaddition and nucleophilic addition. The F-centered Co3 triangles are bridged by trta groups to result in supertriangular {(Co3F)3(trta)2} SBBs that are further arranged in a frustrated triangular lattice. The long-range ordering temperature is reduced to 4.8 K due to strong spin frustration. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00201669
- Volume :
- 48
- Issue :
- 10
- Database :
- Academic Search Index
- Journal :
- Inorganic Chemistry
- Publication Type :
- Academic Journal
- Accession number :
- 40221038
- Full Text :
- https://doi.org/10.1021/ic9002912