Synthesis and magnetism of binuclear cobalt(II) complexes with the tetraacetylethene dianion as a bridging ligand

Jingmin Shi; Jiqing Xu; Renzhang Wang; Guoyu Yang; Haoran Sun; Tiegang Wang; Peng Cheng; Daizheng Liao

doi:10.1023/A:1006938303306

Synthesis and magnetism of binuclear cobalt(II) complexes with the tetraacetylethene dianion as a bridging ligand

Jingmin Shi^*, Jiqing Xu, Renzhang Wang, Guoyu Yang, Haoran Sun, Tiegang Wang, Peng Cheng, Daizheng Liao

^*Corresponding author for this work

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

3 Citations (Scopus)

Abstract

Three novel binuclear Co^IIcomplexes, [Co₂(TAE)-(phen)₄](ClO₄)₂ · 3H₂O(1),[Co₂(TAE)(Nphen)₄](ClO ₄)₂ · 4H₂O(2) and [CO₂(TAE)(bipy)₄](ClO₄)₂ · H₂O(3) (TAE = tetraacetylethene dianion, phen = 1,10-phenanthroline, Nphen = 5-nitro·1,10-phenanthroline, bipy = 2,2′-bipyridyl), have been synthesized and characterized by elemental analysis, i.r., molar conductance and electronic reflection spectra. The complexes are proposed to contain tetraacetylethene dianion bridged structures and two Co^II ions. The variable-temperature magnetic susceptibility of complex (1) was measured in the 4-300 K range. The magnetic coupling parameter is consistent with antiferromagnetic exchange between the two Co^II centres and the data fit a binuclear magnetic exchange model based on the Hamiltonian operator (Ĥ = -2JŜ₁Ŝ₂, S₁ = S₂ = 3/2), giving the antiferromagnetic coupling parameter of 2J = -1.55 cm^-1.

Original language	English
Pages (from-to)	629-630
Number of pages	2
Journal	Transition Metal Chemistry
Volume	23
Issue number	5
DOIs	https://doi.org/10.1023/A:1006938303306
Publication status	Published - 1998
Externally published	Yes

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@article{115904fff0e948208b07c63c01a08a51,

title = "Synthesis and magnetism of binuclear cobalt(II) complexes with the tetraacetylethene dianion as a bridging ligand",

abstract = "Three novel binuclear CoIIcomplexes, [Co2(TAE)-(phen)4](ClO4)2 · 3H2O(1),[Co2(TAE)(Nphen)4](ClO 4)2 · 4H2O(2) and [CO2(TAE)(bipy)4](ClO4)2 · H2O(3) (TAE = tetraacetylethene dianion, phen = 1,10-phenanthroline, Nphen = 5-nitro·1,10-phenanthroline, bipy = 2,2′-bipyridyl), have been synthesized and characterized by elemental analysis, i.r., molar conductance and electronic reflection spectra. The complexes are proposed to contain tetraacetylethene dianion bridged structures and two CoII ions. The variable-temperature magnetic susceptibility of complex (1) was measured in the 4-300 K range. The magnetic coupling parameter is consistent with antiferromagnetic exchange between the two CoII centres and the data fit a binuclear magnetic exchange model based on the Hamiltonian operator (Ĥ = -2JŜ1Ŝ2, S1 = S2 = 3/2), giving the antiferromagnetic coupling parameter of 2J = -1.55 cm-1.",

author = "Jingmin Shi and Jiqing Xu and Renzhang Wang and Guoyu Yang and Haoran Sun and Tiegang Wang and Peng Cheng and Daizheng Liao",

year = "1998",

doi = "10.1023/A:1006938303306",

language = "English",

volume = "23",

pages = "629--630",

journal = "Transition Metal Chemistry",

issn = "0340-4285",

publisher = "Springer Netherlands",

number = "5",

}

TY - JOUR

T1 - Synthesis and magnetism of binuclear cobalt(II) complexes with the tetraacetylethene dianion as a bridging ligand

AU - Shi, Jingmin

AU - Xu, Jiqing

AU - Wang, Renzhang

AU - Yang, Guoyu

AU - Sun, Haoran

AU - Wang, Tiegang

AU - Cheng, Peng

AU - Liao, Daizheng

PY - 1998

Y1 - 1998

N2 - Three novel binuclear CoIIcomplexes, [Co2(TAE)-(phen)4](ClO4)2 · 3H2O(1),[Co2(TAE)(Nphen)4](ClO 4)2 · 4H2O(2) and [CO2(TAE)(bipy)4](ClO4)2 · H2O(3) (TAE = tetraacetylethene dianion, phen = 1,10-phenanthroline, Nphen = 5-nitro·1,10-phenanthroline, bipy = 2,2′-bipyridyl), have been synthesized and characterized by elemental analysis, i.r., molar conductance and electronic reflection spectra. The complexes are proposed to contain tetraacetylethene dianion bridged structures and two CoII ions. The variable-temperature magnetic susceptibility of complex (1) was measured in the 4-300 K range. The magnetic coupling parameter is consistent with antiferromagnetic exchange between the two CoII centres and the data fit a binuclear magnetic exchange model based on the Hamiltonian operator (Ĥ = -2JŜ1Ŝ2, S1 = S2 = 3/2), giving the antiferromagnetic coupling parameter of 2J = -1.55 cm-1.

AB - Three novel binuclear CoIIcomplexes, [Co2(TAE)-(phen)4](ClO4)2 · 3H2O(1),[Co2(TAE)(Nphen)4](ClO 4)2 · 4H2O(2) and [CO2(TAE)(bipy)4](ClO4)2 · H2O(3) (TAE = tetraacetylethene dianion, phen = 1,10-phenanthroline, Nphen = 5-nitro·1,10-phenanthroline, bipy = 2,2′-bipyridyl), have been synthesized and characterized by elemental analysis, i.r., molar conductance and electronic reflection spectra. The complexes are proposed to contain tetraacetylethene dianion bridged structures and two CoII ions. The variable-temperature magnetic susceptibility of complex (1) was measured in the 4-300 K range. The magnetic coupling parameter is consistent with antiferromagnetic exchange between the two CoII centres and the data fit a binuclear magnetic exchange model based on the Hamiltonian operator (Ĥ = -2JŜ1Ŝ2, S1 = S2 = 3/2), giving the antiferromagnetic coupling parameter of 2J = -1.55 cm-1.

UR - http://www.scopus.com/inward/record.url?scp=33847243803&partnerID=8YFLogxK

U2 - 10.1023/A:1006938303306

DO - 10.1023/A:1006938303306

M3 - Article

AN - SCOPUS:33847243803

SN - 0340-4285

VL - 23

SP - 629

EP - 630

JO - Transition Metal Chemistry

JF - Transition Metal Chemistry

IS - 5

ER -

Synthesis and magnetism of binuclear cobalt(II) complexes with the tetraacetylethene dianion as a bridging ligand

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