Magnetic and photo-magnetic properties of Co dinuclear complexes

Osamu Sato; Satoshi Miura; Hiroyuki Maruyama; Yanjuan Zhang; Dayu Wu; Wen Zhang; Haitao Xu; Ryotaro Matsuda; Haoling Sun; Jun Tao

doi:10.1016/j.ica.2008.03.089

Magnetic and photo-magnetic properties of Co dinuclear complexes

Osamu Sato^*, Satoshi Miura, Hiroyuki Maruyama, Yanjuan Zhang, Dayu Wu, Wen Zhang, Haitao Xu, Ryotaro Matsuda, Haoling Sun, Jun Tao

^*Corresponding author for this work

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

7 Citations (Scopus)

Abstract

The magnetic and photo-magnetic properties of Co dinuclear compounds were studied. The Co compounds, [{Co(tpa)}₂(dhbq)](BF₄)₃ · 2H₂O and [{Co(tpa)}₂(dhbq)](ClO₄)₃ · 2H₂O, have the structure [(tpa)Co^III-LS-(μ-dhbq)^3--Co^III-LS(tpa)]^3- (where LS, H₂dhbq, tpa denote low-spin, 2,5-di-hydroxy-1,4-benzoquinone and tris(2-pyridylmethyl)amine, respectively) at room temperature. On heating, these compounds exhibit valence-tautomeric inter-conversion; [(tpa)Co^III-LS-(μ-dhbq)^3--Co^III-LS(tpa)]^3- ⇆ [(tpa)Co^II-HS-(μ-dhbq)^2--Co^III-LS(tpa)]^3- (where HS denotes high-spin). Furthermore, both of these compounds exhibit photo-induced valence tautomerism at low temperature (<60 K). These results show that the electronic structures of these complexes can be controlled by modifying the counter anions.

Original language	English
Pages (from-to)	3659-3662
Number of pages	4
Journal	Inorganica Chimica Acta
Volume	361
Issue number	12-13
DOIs	https://doi.org/10.1016/j.ica.2008.03.089
Publication status	Published - 1 Sept 2008
Externally published	Yes

Keywords

Long lifetime
Photo-induced electron transfer
Valence tautomerism

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10.1016/j.ica.2008.03.089

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@article{bb56b98b091d4e4ab79a78564242a13d,

title = "Magnetic and photo-magnetic properties of Co dinuclear complexes",

abstract = "The magnetic and photo-magnetic properties of Co dinuclear compounds were studied. The Co compounds, [{Co(tpa)}2(dhbq)](BF4)3 · 2H2O and [{Co(tpa)}2(dhbq)](ClO4)3 · 2H2O, have the structure [(tpa)CoIII-LS-(μ-dhbq)3--CoIII-LS(tpa)]3- (where LS, H2dhbq, tpa denote low-spin, 2,5-di-hydroxy-1,4-benzoquinone and tris(2-pyridylmethyl)amine, respectively) at room temperature. On heating, these compounds exhibit valence-tautomeric inter-conversion; [(tpa)CoIII-LS-(μ-dhbq)3--CoIII-LS(tpa)]3- ⇆ [(tpa)CoII-HS-(μ-dhbq)2--CoIII-LS(tpa)]3- (where HS denotes high-spin). Furthermore, both of these compounds exhibit photo-induced valence tautomerism at low temperature (<60 K). These results show that the electronic structures of these complexes can be controlled by modifying the counter anions.",

keywords = "Long lifetime, Photo-induced electron transfer, Valence tautomerism",

author = "Osamu Sato and Satoshi Miura and Hiroyuki Maruyama and Yanjuan Zhang and Dayu Wu and Wen Zhang and Haitao Xu and Ryotaro Matsuda and Haoling Sun and Jun Tao",

year = "2008",

month = sep,

day = "1",

doi = "10.1016/j.ica.2008.03.089",

language = "English",

volume = "361",

pages = "3659--3662",

journal = "Inorganica Chimica Acta",

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TY - JOUR

T1 - Magnetic and photo-magnetic properties of Co dinuclear complexes

AU - Sato, Osamu

AU - Miura, Satoshi

AU - Maruyama, Hiroyuki

AU - Zhang, Yanjuan

AU - Wu, Dayu

AU - Zhang, Wen

AU - Xu, Haitao

AU - Matsuda, Ryotaro

AU - Sun, Haoling

AU - Tao, Jun

PY - 2008/9/1

Y1 - 2008/9/1

N2 - The magnetic and photo-magnetic properties of Co dinuclear compounds were studied. The Co compounds, [{Co(tpa)}2(dhbq)](BF4)3 · 2H2O and [{Co(tpa)}2(dhbq)](ClO4)3 · 2H2O, have the structure [(tpa)CoIII-LS-(μ-dhbq)3--CoIII-LS(tpa)]3- (where LS, H2dhbq, tpa denote low-spin, 2,5-di-hydroxy-1,4-benzoquinone and tris(2-pyridylmethyl)amine, respectively) at room temperature. On heating, these compounds exhibit valence-tautomeric inter-conversion; [(tpa)CoIII-LS-(μ-dhbq)3--CoIII-LS(tpa)]3- ⇆ [(tpa)CoII-HS-(μ-dhbq)2--CoIII-LS(tpa)]3- (where HS denotes high-spin). Furthermore, both of these compounds exhibit photo-induced valence tautomerism at low temperature (<60 K). These results show that the electronic structures of these complexes can be controlled by modifying the counter anions.

AB - The magnetic and photo-magnetic properties of Co dinuclear compounds were studied. The Co compounds, [{Co(tpa)}2(dhbq)](BF4)3 · 2H2O and [{Co(tpa)}2(dhbq)](ClO4)3 · 2H2O, have the structure [(tpa)CoIII-LS-(μ-dhbq)3--CoIII-LS(tpa)]3- (where LS, H2dhbq, tpa denote low-spin, 2,5-di-hydroxy-1,4-benzoquinone and tris(2-pyridylmethyl)amine, respectively) at room temperature. On heating, these compounds exhibit valence-tautomeric inter-conversion; [(tpa)CoIII-LS-(μ-dhbq)3--CoIII-LS(tpa)]3- ⇆ [(tpa)CoII-HS-(μ-dhbq)2--CoIII-LS(tpa)]3- (where HS denotes high-spin). Furthermore, both of these compounds exhibit photo-induced valence tautomerism at low temperature (<60 K). These results show that the electronic structures of these complexes can be controlled by modifying the counter anions.

KW - Long lifetime

KW - Photo-induced electron transfer

KW - Valence tautomerism

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U2 - 10.1016/j.ica.2008.03.089

DO - 10.1016/j.ica.2008.03.089

M3 - Article

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SN - 0020-1693

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EP - 3662

JO - Inorganica Chimica Acta

JF - Inorganica Chimica Acta

IS - 12-13

ER -

Magnetic and photo-magnetic properties of Co dinuclear complexes

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Keywords

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