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Heterocyclic amine directed synthesis of metal(ii)-oxalates: investigating the magnetic properties of two complete series of chains with S = 5/2 to S = 1/2

Heterocyclic amine directed synthesis of metal(ii)-oxalates: investigating the magnetic properties of two complete series of chains with S = 5/2 to S = 1/2
Heterocyclic amine directed synthesis of metal(ii)-oxalates: investigating the magnetic properties of two complete series of chains with S = 5/2 to S = 1/2
We report here two series of coordination polymer chains: the first being [M(II)(ox)(bnz)(2)](n) (M = Mn 1, Fe 2, Co 3, Ni 4, Cu 5 and Zn 6; ox = oxalate C(2)O(4)(2-); bnz = benzimidazole) and the second [M(II)(ox)(btz)(2)](n) (M = Mn 7, Fe 8, Co 9, Ni 10, Cu 11 and Zn 12; btz = benzotriazole). The first series displays an unusual homometallic [-M(i)-M(ii)-M(ii)-](n) chain topology and the second series is isostructural to [Fe(II)(ox)(btz)(2)](n), originally reported by Jia et al. (Collect. Czech. Chem. Commun., 2002, 67, 1609-1615). These two series allow us to make comparisons between the spin state of each metal and the magnetic coupling interaction within an isostructural series spanning the full range of spin states available in 3d metals and to investigate which models are the best to use in each case. Compound 8 is a single-chain magnet, the behaviour through spin-canting arising from a Dzyaloshinskii-Moriya interaction. Additionally, we have synthesised a two-dimensional coordination polymer {[Zn(II)(bnz)(4)][Zn(II)(2)(ox)(3)]}(n) (13), in which distorted hexagonal [Zn(II)(2)(ox)(3)](n)(2n-) layers are hydrogen bonded by [Zn(II)(bnz)(4)](2+) cations to give an interlayer separation of 12.001(2) angstrom.
0300-9246
4937-4950
Keene, Tony D.
fb859c26-6a1d-4c43-a15f-f329bc8d34d7
Zimmermann, Iwan
c1ffc60d-700a-4757-865e-2395c1486f99
Neels, Antonia
a8d7f75b-c2c2-4d1f-bfb4-d538fd4c9073
Sereda, Olha
faf87206-8fd7-415b-ab6a-1203d668b97c
Hauser, Jürg
eabd6bf7-344a-4bea-a073-79479dc06743
Bonin, Michel
5ed2c190-46e7-4827-85e9-28bb6e5825b2
Hursthouse, Michael B.
57a2ddf9-b1b3-4f38-bfe9-ef2f526388da
Price, Daniel J.
479ee5e3-2626-4abe-bffa-679d77ba5192
Decurtins, Silvio
331985a5-2121-47e4-a4b2-2fd09f8cabfd
Keene, Tony D.
fb859c26-6a1d-4c43-a15f-f329bc8d34d7
Zimmermann, Iwan
c1ffc60d-700a-4757-865e-2395c1486f99
Neels, Antonia
a8d7f75b-c2c2-4d1f-bfb4-d538fd4c9073
Sereda, Olha
faf87206-8fd7-415b-ab6a-1203d668b97c
Hauser, Jürg
eabd6bf7-344a-4bea-a073-79479dc06743
Bonin, Michel
5ed2c190-46e7-4827-85e9-28bb6e5825b2
Hursthouse, Michael B.
57a2ddf9-b1b3-4f38-bfe9-ef2f526388da
Price, Daniel J.
479ee5e3-2626-4abe-bffa-679d77ba5192
Decurtins, Silvio
331985a5-2121-47e4-a4b2-2fd09f8cabfd

Keene, Tony D., Zimmermann, Iwan, Neels, Antonia, Sereda, Olha, Hauser, Jürg, Bonin, Michel, Hursthouse, Michael B., Price, Daniel J. and Decurtins, Silvio (2010) Heterocyclic amine directed synthesis of metal(ii)-oxalates: investigating the magnetic properties of two complete series of chains with S = 5/2 to S = 1/2. [in special issue: Molecular Magnets] Dalton Transactions, 39 (20), 4937-4950. (doi:10.1039/b927522c).

Record type: Article

Abstract

We report here two series of coordination polymer chains: the first being [M(II)(ox)(bnz)(2)](n) (M = Mn 1, Fe 2, Co 3, Ni 4, Cu 5 and Zn 6; ox = oxalate C(2)O(4)(2-); bnz = benzimidazole) and the second [M(II)(ox)(btz)(2)](n) (M = Mn 7, Fe 8, Co 9, Ni 10, Cu 11 and Zn 12; btz = benzotriazole). The first series displays an unusual homometallic [-M(i)-M(ii)-M(ii)-](n) chain topology and the second series is isostructural to [Fe(II)(ox)(btz)(2)](n), originally reported by Jia et al. (Collect. Czech. Chem. Commun., 2002, 67, 1609-1615). These two series allow us to make comparisons between the spin state of each metal and the magnetic coupling interaction within an isostructural series spanning the full range of spin states available in 3d metals and to investigate which models are the best to use in each case. Compound 8 is a single-chain magnet, the behaviour through spin-canting arising from a Dzyaloshinskii-Moriya interaction. Additionally, we have synthesised a two-dimensional coordination polymer {[Zn(II)(bnz)(4)][Zn(II)(2)(ox)(3)]}(n) (13), in which distorted hexagonal [Zn(II)(2)(ox)(3)](n)(2n-) layers are hydrogen bonded by [Zn(II)(bnz)(4)](2+) cations to give an interlayer separation of 12.001(2) angstrom.

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Published date: April 2010
Organisations: Organic Chemistry: Synthesis, Catalysis and Flow, Chemistry

Identifiers

Local EPrints ID: 347458
URI: http://eprints.soton.ac.uk/id/eprint/347458
ISSN: 0300-9246
PURE UUID: 4aff114a-95f5-4749-a094-055cd6de9ac5
ORCID for Tony D. Keene: ORCID iD orcid.org/0000-0003-2297-4327

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Date deposited: 04 Feb 2013 16:06
Last modified: 29 Oct 2019 01:38

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