Magnetic Properties of Some Triangular Trinuclear Complexes of [Ru2M(μ-CH3COO)6(μ 3-O)(py)3]n+ with a Paramagnetic Ion M

Hanako Kobayashi; Norikiyo Uryû; Iwao Mogi; Ryo Miyamoto; Yasunori Ohba; Masamoto Iwaizumi; Yoichi Sasaki; Akihiro Ohto; Masaaki Suwabe; Tasuku Ito

doi:10.1246/bcsj.69.3163

Magnetic Properties of Some Triangular Trinuclear Complexes of [Ru₂M(μ-CH₃COO)₆(μ ₃-O)(py)₃]ⁿ⁺ with a Paramagnetic Ion M

Hanako Kobayashi, Norikiyo Uryû, Iwao Mogi, Ryo Miyamoto, Yasunori Ohba, Masamoto Iwaizumi, Yoichi Sasaki, Akihiro Ohto, Masaaki Suwabe, Tasuku Ito

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Abstract

Magnetic susceptibilities and electron paramagnetic resonances (EPRs) of coordination compounds of triangular trinuclear [Ru₂M(μ-CH₃COO)₆(μ ₃-O)(py)₃]ⁿ⁺, M=Mn(II), Fe(III), Cr(III), Ni(II), or Co(II) ions, were observed. The results were analysed by the spin vector model. Effective Bohr magneton numbers showed that the main superexchange interaction within each cluster was of the order of J/k=-300 K. This was considered to be working through μ₃-O. Together with some weaker superexchange interactions through μ-CH₃COO paths, fittings with the susceptibilities of the model were tried. EPR signals at temperatures of a few K were characteristic of each M ion. M=Mn(II) and M=Fe(III) were at high spin states of S=5/2 and M=Co(II) was at a low spin state of S=1/2. Temperature dependences of EPR signals are discussed.

Original language	English
Pages (from-to)	3163-3172
Number of pages	10
Journal	Bulletin of the Chemical Society of Japan
Volume	69
Issue number	11
DOIs	https://doi.org/10.1246/bcsj.69.3163
Publication status	Published - 1996 Nov

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Chemistry(all)

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Magnetic Properties of Some Triangular Trinuclear Complexes of [Ru₂M(μ-CH₃COO)₆(μ ₃-O)(py)₃]ⁿ⁺ with a Paramagnetic Ion M. / Kobayashi, Hanako; Uryû, Norikiyo; Mogi, Iwao; Miyamoto, Ryo; Ohba, Yasunori; Iwaizumi, Masamoto; Sasaki, Yoichi; Ohto, Akihiro; Suwabe, Masaaki; Ito, Tasuku.

In: Bulletin of the Chemical Society of Japan, Vol. 69, No. 11, 11.1996, p. 3163-3172.

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

Kobayashi, Hanako ; Uryû, Norikiyo ; Mogi, Iwao ; Miyamoto, Ryo ; Ohba, Yasunori ; Iwaizumi, Masamoto ; Sasaki, Yoichi ; Ohto, Akihiro ; Suwabe, Masaaki ; Ito, Tasuku. / Magnetic Properties of Some Triangular Trinuclear Complexes of [Ru₂M(μ-CH₃COO)₆(μ ₃-O)(py)₃]ⁿ⁺ with a Paramagnetic Ion M. In: Bulletin of the Chemical Society of Japan. 1996 ; Vol. 69, No. 11. pp. 3163-3172.

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abstract = "Magnetic susceptibilities and electron paramagnetic resonances (EPRs) of coordination compounds of triangular trinuclear [Ru2M(μ-CH3COO)6(μ 3-O)(py)3]n+, M=Mn(II), Fe(III), Cr(III), Ni(II), or Co(II) ions, were observed. The results were analysed by the spin vector model. Effective Bohr magneton numbers showed that the main superexchange interaction within each cluster was of the order of J/k=-300 K. This was considered to be working through μ3-O. Together with some weaker superexchange interactions through μ-CH3COO paths, fittings with the susceptibilities of the model were tried. EPR signals at temperatures of a few K were characteristic of each M ion. M=Mn(II) and M=Fe(III) were at high spin states of S=5/2 and M=Co(II) was at a low spin state of S=1/2. Temperature dependences of EPR signals are discussed.",

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AU - Uryû, Norikiyo

AU - Mogi, Iwao

AU - Miyamoto, Ryo

AU - Ohba, Yasunori

AU - Iwaizumi, Masamoto

AU - Sasaki, Yoichi

AU - Ohto, Akihiro

AU - Suwabe, Masaaki

AU - Ito, Tasuku

PY - 1996/11

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N2 - Magnetic susceptibilities and electron paramagnetic resonances (EPRs) of coordination compounds of triangular trinuclear [Ru2M(μ-CH3COO)6(μ 3-O)(py)3]n+, M=Mn(II), Fe(III), Cr(III), Ni(II), or Co(II) ions, were observed. The results were analysed by the spin vector model. Effective Bohr magneton numbers showed that the main superexchange interaction within each cluster was of the order of J/k=-300 K. This was considered to be working through μ3-O. Together with some weaker superexchange interactions through μ-CH3COO paths, fittings with the susceptibilities of the model were tried. EPR signals at temperatures of a few K were characteristic of each M ion. M=Mn(II) and M=Fe(III) were at high spin states of S=5/2 and M=Co(II) was at a low spin state of S=1/2. Temperature dependences of EPR signals are discussed.

AB - Magnetic susceptibilities and electron paramagnetic resonances (EPRs) of coordination compounds of triangular trinuclear [Ru2M(μ-CH3COO)6(μ 3-O)(py)3]n+, M=Mn(II), Fe(III), Cr(III), Ni(II), or Co(II) ions, were observed. The results were analysed by the spin vector model. Effective Bohr magneton numbers showed that the main superexchange interaction within each cluster was of the order of J/k=-300 K. This was considered to be working through μ3-O. Together with some weaker superexchange interactions through μ-CH3COO paths, fittings with the susceptibilities of the model were tried. EPR signals at temperatures of a few K were characteristic of each M ion. M=Mn(II) and M=Fe(III) were at high spin states of S=5/2 and M=Co(II) was at a low spin state of S=1/2. Temperature dependences of EPR signals are discussed.

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Magnetic Properties of Some Triangular Trinuclear Complexes of [Ru₂M(μ-CH₃COO)₆(μ ₃-O)(py)₃]ⁿ⁺ with a Paramagnetic Ion M

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