Ferromagnetic coupling in a heptanuclear nickel cluster with a vertex-shared dicubane structure
Ferromagnetic coupling in a heptanuclear nickel cluster with a vertex-shared dicubane structure
Hydrothermal synthesis under basic conditions has given a new cluster compound, Ni-7(OH)(8)(ox)(3)(pip)(3) (ox = oxalate; pip = piperazine). This hybrid material comprises inorganic Ni-7(OH)(8) clusters, which have a vertex-shared dicubane structure. These units are held together in a 3-dimensional coordination network by organic bridging ligands. Magnetic susceptibility studies suggest a ferromagnetic coupling within the cluster and an antiferromagnetic interaction between neighbouring Ni-7 units. At low temperatures the material appears to undergo a magnetic phase transition to an ordered antiferromagnetic state with T-N = 17 K.
single-molecule magnets, crystal-structures, ground-state, magnetostructural correlations, complexes, magnetization, exchange, oxalate, ligand, iron
558-561
Keene, Tony D.
fb859c26-6a1d-4c43-a15f-f329bc8d34d7
Hursthouse, Michael B.
57a2ddf9-b1b3-4f38-bfe9-ef2f526388da
Price, Daniel J.
479ee5e3-2626-4abe-bffa-679d77ba5192
2004
Keene, Tony D.
fb859c26-6a1d-4c43-a15f-f329bc8d34d7
Hursthouse, Michael B.
57a2ddf9-b1b3-4f38-bfe9-ef2f526388da
Price, Daniel J.
479ee5e3-2626-4abe-bffa-679d77ba5192
Keene, Tony D., Hursthouse, Michael B. and Price, Daniel J.
(2004)
Ferromagnetic coupling in a heptanuclear nickel cluster with a vertex-shared dicubane structure.
New Journal of Chemistry, 28 (5), .
(doi:10.1039/b315323a).
Abstract
Hydrothermal synthesis under basic conditions has given a new cluster compound, Ni-7(OH)(8)(ox)(3)(pip)(3) (ox = oxalate; pip = piperazine). This hybrid material comprises inorganic Ni-7(OH)(8) clusters, which have a vertex-shared dicubane structure. These units are held together in a 3-dimensional coordination network by organic bridging ligands. Magnetic susceptibility studies suggest a ferromagnetic coupling within the cluster and an antiferromagnetic interaction between neighbouring Ni-7 units. At low temperatures the material appears to undergo a magnetic phase transition to an ordered antiferromagnetic state with T-N = 17 K.
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Published date: 2004
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Keywords:
single-molecule magnets, crystal-structures, ground-state, magnetostructural correlations, complexes, magnetization, exchange, oxalate, ligand, iron
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Local EPrints ID: 20248
URI: http://eprints.soton.ac.uk/id/eprint/20248
ISSN: 1144-0546
PURE UUID: daeb4be8-7c44-4ecd-91b9-8750e601f60d
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Date deposited: 21 Feb 2006
Last modified: 15 Mar 2024 06:23
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Author:
Tony D. Keene
Author:
Daniel J. Price
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