Abstract
Two 3D cobalt-organic frameworks formulated as [Co3(2,4-pydc) 2(μ3-OH)2]n·5nH 2O (1) and [Co3(2,4-pydc)2(μ3-OH) 2(H2O)]n·7nH2O (2) (2,4-pydc = pyridine-2,4-dicarboxylate) have been hydrothermally synthesized and characterized. Both compounds 1 and 2 exhibit the 3D porous frameworks with hydroxyl-bridged metal Δ-chains. However, in comparison with only two crystallographically independent CoII ions in a unit of 2, three crystallographically independent CoII ions are found in an asymmetric unit of 1, where their Δ-chains are constructed by two types of Vertexes sharing quadrangles formed via edge-sharing triangles. Magnetic studies show that 1 exhibits spin-canted antiferomagnetism and a field-induced spin-flop transition while 2 behaves as a normal antiferromagnet. The magnetic properties are largely retained by the porous frameworks of dehydrated 1 and 2 compounds. Gas adsorption measurements indicate that both the dehydrated compounds absorb H2 into their pores.
| Original language | English |
|---|---|
| Pages (from-to) | 9609-9615 |
| Number of pages | 7 |
| Journal | Inorganic Chemistry |
| Volume | 46 |
| Issue number | 23 |
| DOIs | |
| Publication status | Published - Nov 12 2007 |
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ASJC Scopus subject areas
- Inorganic Chemistry
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A 3D porous cobalt-organic framework exhibiting spin-canted antiferromagnetism and field-induced spin-flop transition. / Huang, You Gui; Yuan, Da Qiang; Pan, Long; Jiang, Fei Long; Wu, Ming Yan; Zhang, Xu Dong; Wei, Wei; Gao, Qiang; Jeong, Yong Lee; Li, Jing; Hong, Mao Chun.
In: Inorganic Chemistry, Vol. 46, No. 23, 12.11.2007, p. 9609-9615.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - A 3D porous cobalt-organic framework exhibiting spin-canted antiferromagnetism and field-induced spin-flop transition
AU - Huang, You Gui
AU - Yuan, Da Qiang
AU - Pan, Long
AU - Jiang, Fei Long
AU - Wu, Ming Yan
AU - Zhang, Xu Dong
AU - Wei, Wei
AU - Gao, Qiang
AU - Jeong, Yong Lee
AU - Li, Jing
AU - Hong, Mao Chun
PY - 2007/11/12
Y1 - 2007/11/12
N2 - Two 3D cobalt-organic frameworks formulated as [Co3(2,4-pydc) 2(μ3-OH)2]n·5nH 2O (1) and [Co3(2,4-pydc)2(μ3-OH) 2(H2O)]n·7nH2O (2) (2,4-pydc = pyridine-2,4-dicarboxylate) have been hydrothermally synthesized and characterized. Both compounds 1 and 2 exhibit the 3D porous frameworks with hydroxyl-bridged metal Δ-chains. However, in comparison with only two crystallographically independent CoII ions in a unit of 2, three crystallographically independent CoII ions are found in an asymmetric unit of 1, where their Δ-chains are constructed by two types of Vertexes sharing quadrangles formed via edge-sharing triangles. Magnetic studies show that 1 exhibits spin-canted antiferomagnetism and a field-induced spin-flop transition while 2 behaves as a normal antiferromagnet. The magnetic properties are largely retained by the porous frameworks of dehydrated 1 and 2 compounds. Gas adsorption measurements indicate that both the dehydrated compounds absorb H2 into their pores.
AB - Two 3D cobalt-organic frameworks formulated as [Co3(2,4-pydc) 2(μ3-OH)2]n·5nH 2O (1) and [Co3(2,4-pydc)2(μ3-OH) 2(H2O)]n·7nH2O (2) (2,4-pydc = pyridine-2,4-dicarboxylate) have been hydrothermally synthesized and characterized. Both compounds 1 and 2 exhibit the 3D porous frameworks with hydroxyl-bridged metal Δ-chains. However, in comparison with only two crystallographically independent CoII ions in a unit of 2, three crystallographically independent CoII ions are found in an asymmetric unit of 1, where their Δ-chains are constructed by two types of Vertexes sharing quadrangles formed via edge-sharing triangles. Magnetic studies show that 1 exhibits spin-canted antiferomagnetism and a field-induced spin-flop transition while 2 behaves as a normal antiferromagnet. The magnetic properties are largely retained by the porous frameworks of dehydrated 1 and 2 compounds. Gas adsorption measurements indicate that both the dehydrated compounds absorb H2 into their pores.
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U2 - 10.1021/ic700559z
DO - 10.1021/ic700559z
M3 - Article
VL - 46
SP - 9609
EP - 9615
JO - Inorganic Chemistry
JF - Inorganic Chemistry
SN - 0020-1669
IS - 23
ER -