Syntheses, structures, and magnetic properties of cyano- and phenoxide-bridged Fe(iii)-Mn(iii) tetrameric assemblies formed by blocked fac-Fe tricyanide with aliphatic rings

Kyung Jin Cho; Dae Won Ryu; Kwang Soo Lim; Woo Ram Lee; Jin Wuk Lee; Eui Kwan Koh; Chang Seop Hong

doi:10.1039/c3dt32563f

Syntheses, structures, and magnetic properties of cyano- and phenoxide-bridged Fe(iii)-Mn(iii) tetrameric assemblies formed by blocked fac-Fe tricyanide with aliphatic rings

Kyung Jin Cho, Dae Won Ryu, Kwang Soo Lim, Woo Ram Lee, Jin Wuk Lee, Eui Kwan Koh, Chang Seop Hong

Research output: Contribution to journal › Article › peer-review

8 Citations (Scopus)

Abstract

Three tetranuclear clusters [(Tp^Me,mt3)Fe(CN) ₃Mn(L)]₂ (1, L = 5-Clacphmen; 2, L = 5-Clsalen; 3, L = 5-MeOsalen; Tp^Me,mt3 = hydrotris(3-methyl-4,5-propylene-5- methylpyrazol-1-yl)borate) were prepared by assembling the fac-Fe tricyanide with the corresponding Mn Schiff bases. The assembled molecules are linked by cyanide and phenoxide bridges. Weak π-π contacts between molecules are evident in these clusters. Compounds 1-3 exhibit slow relaxation of the magnetization. The phenoxide linkers mediate ferromagnetic coupling between the Mn centers, which is ascribed to the long axial Mn-O* length. The overall magnetic exchange coupling nature of the Fe-CN-Mn route is accounted for by the important structural parameters of bridging pathways such as Mn-N _cyano length, Mn-N_cyano-C_cyano angle, and C_eq-Fe⋯Mn-N_eq (eq = equatorial) torsion angle.

Original language	English
Pages (from-to)	5796-5804
Number of pages	9
Journal	Dalton Transactions
Volume	42
Issue number	16
DOIs	https://doi.org/10.1039/c3dt32563f
Publication status	Published - 2013 Apr 28

ASJC Scopus subject areas

Inorganic Chemistry

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title = "Syntheses, structures, and magnetic properties of cyano- and phenoxide-bridged Fe(iii)-Mn(iii) tetrameric assemblies formed by blocked fac-Fe tricyanide with aliphatic rings",

abstract = "Three tetranuclear clusters [(TpMe,mt3)Fe(CN) 3Mn(L)]2 (1, L = 5-Clacphmen; 2, L = 5-Clsalen; 3, L = 5-MeOsalen; TpMe,mt3 = hydrotris(3-methyl-4,5-propylene-5- methylpyrazol-1-yl)borate) were prepared by assembling the fac-Fe tricyanide with the corresponding Mn Schiff bases. The assembled molecules are linked by cyanide and phenoxide bridges. Weak π-π contacts between molecules are evident in these clusters. Compounds 1-3 exhibit slow relaxation of the magnetization. The phenoxide linkers mediate ferromagnetic coupling between the Mn centers, which is ascribed to the long axial Mn-O* length. The overall magnetic exchange coupling nature of the Fe-CN-Mn route is accounted for by the important structural parameters of bridging pathways such as Mn-N cyano length, Mn-Ncyano-Ccyano angle, and Ceq-Fe⋯Mn-Neq (eq = equatorial) torsion angle.",

author = "Cho, {Kyung Jin} and Ryu, {Dae Won} and Lim, {Kwang Soo} and Lee, {Woo Ram} and Lee, {Jin Wuk} and Koh, {Eui Kwan} and Hong, {Chang Seop}",

year = "2013",

month = apr,

day = "28",

doi = "10.1039/c3dt32563f",

language = "English",

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journal = "Dalton Transactions",

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AU - Cho, Kyung Jin

AU - Ryu, Dae Won

AU - Lim, Kwang Soo

AU - Lee, Woo Ram

AU - Lee, Jin Wuk

AU - Koh, Eui Kwan

AU - Hong, Chang Seop

PY - 2013/4/28

Y1 - 2013/4/28

N2 - Three tetranuclear clusters [(TpMe,mt3)Fe(CN) 3Mn(L)]2 (1, L = 5-Clacphmen; 2, L = 5-Clsalen; 3, L = 5-MeOsalen; TpMe,mt3 = hydrotris(3-methyl-4,5-propylene-5- methylpyrazol-1-yl)borate) were prepared by assembling the fac-Fe tricyanide with the corresponding Mn Schiff bases. The assembled molecules are linked by cyanide and phenoxide bridges. Weak π-π contacts between molecules are evident in these clusters. Compounds 1-3 exhibit slow relaxation of the magnetization. The phenoxide linkers mediate ferromagnetic coupling between the Mn centers, which is ascribed to the long axial Mn-O* length. The overall magnetic exchange coupling nature of the Fe-CN-Mn route is accounted for by the important structural parameters of bridging pathways such as Mn-N cyano length, Mn-Ncyano-Ccyano angle, and Ceq-Fe⋯Mn-Neq (eq = equatorial) torsion angle.

AB - Three tetranuclear clusters [(TpMe,mt3)Fe(CN) 3Mn(L)]2 (1, L = 5-Clacphmen; 2, L = 5-Clsalen; 3, L = 5-MeOsalen; TpMe,mt3 = hydrotris(3-methyl-4,5-propylene-5- methylpyrazol-1-yl)borate) were prepared by assembling the fac-Fe tricyanide with the corresponding Mn Schiff bases. The assembled molecules are linked by cyanide and phenoxide bridges. Weak π-π contacts between molecules are evident in these clusters. Compounds 1-3 exhibit slow relaxation of the magnetization. The phenoxide linkers mediate ferromagnetic coupling between the Mn centers, which is ascribed to the long axial Mn-O* length. The overall magnetic exchange coupling nature of the Fe-CN-Mn route is accounted for by the important structural parameters of bridging pathways such as Mn-N cyano length, Mn-Ncyano-Ccyano angle, and Ceq-Fe⋯Mn-Neq (eq = equatorial) torsion angle.

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Syntheses, structures, and magnetic properties of cyano- and phenoxide-bridged Fe(iii)-Mn(iii) tetrameric assemblies formed by blocked fac-Fe tricyanide with aliphatic rings

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