Two-dimensional metal-organic frameworks: a system with competing chelating ligands
Two-dimensional metal-organic frameworks: a system with competing chelating ligands
We report the synthesis, structure, and magnetism of two coordination polymers with a designed network topology. These isostructural materials are hydrothermally crystallized having a composition of M(en)(ox) (en = ethylenediamine, ox = oxalate, M = Co(II) 1 and Ni(II) 2). The structures show a rare bridging mode of ethylenediamine which links linear [M(ox)](infinity) chains into an oblique two-dimensional network. Both compounds show anti ferromagnetic interactions behaving as one-dimensional magnets. The magnetism of 1 is consistent with an S = 3/2 chain affected by spin-orbit coupling (g = 2.814(2), J/k(B) = - 16.03(3) K, D/k(B) = 86.2(4) K), while 2 is a candidate Haldane antiferromagnet (g = 2.194(2), J/k(B) = -39.3(1), E(g)/k(B) = 16.5 K). We discuss the use of models for S = 3/2 antiferromagnetic chains and present our own polynomial for Heisenberg S = 3/2 antiferromagnetic chains.
2604-2609
Keene, Tony D.
fb859c26-6a1d-4c43-a15f-f329bc8d34d7
Hursthouse, Michael B.
57a2ddf9-b1b3-4f38-bfe9-ef2f526388da
Price, Daniel J.
479ee5e3-2626-4abe-bffa-679d77ba5192
24 April 2009
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.
(2009)
Two-dimensional metal-organic frameworks: a system with competing chelating ligands.
Crystal Growth & Design, 9 (6), .
(doi:10.1021/cg800769z).
Abstract
We report the synthesis, structure, and magnetism of two coordination polymers with a designed network topology. These isostructural materials are hydrothermally crystallized having a composition of M(en)(ox) (en = ethylenediamine, ox = oxalate, M = Co(II) 1 and Ni(II) 2). The structures show a rare bridging mode of ethylenediamine which links linear [M(ox)](infinity) chains into an oblique two-dimensional network. Both compounds show anti ferromagnetic interactions behaving as one-dimensional magnets. The magnetism of 1 is consistent with an S = 3/2 chain affected by spin-orbit coupling (g = 2.814(2), J/k(B) = - 16.03(3) K, D/k(B) = 86.2(4) K), while 2 is a candidate Haldane antiferromagnet (g = 2.194(2), J/k(B) = -39.3(1), E(g)/k(B) = 16.5 K). We discuss the use of models for S = 3/2 antiferromagnetic chains and present our own polynomial for Heisenberg S = 3/2 antiferromagnetic chains.
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Published date: 24 April 2009
Organisations:
Organic Chemistry: Synthesis, Catalysis and Flow, Chemistry, Faculty of Natural and Environmental Sciences
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Local EPrints ID: 351390
URI: http://eprints.soton.ac.uk/id/eprint/351390
ISSN: 1528-7483
PURE UUID: 06b62a45-74fa-4bd6-bd80-5611cd6d5935
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Date deposited: 22 Apr 2013 10:47
Last modified: 14 Mar 2024 13:39
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Author:
Tony D. Keene
Author:
Daniel J. Price
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