Syntheses, crystal-solution structures and magnetic properties of a series of decanuclear heterometallic [LnIII2CoII4CoIII4] (Ln = Eu, Gd, Tb, Dy) clusters

You Zhu Yu; Yue Qiao Hu; Yu Hua Guo; Yong Sheng Niu; Li Guo Yang; Hai Xiang Song; Yan Hong Shen; Xiao Ming Zheng; Shao Gang Hou; Guo Dong Feng

doi:10.1039/c8dt01252k

Syntheses, crystal-solution structures and magnetic properties of a series of decanuclear heterometallic [LnIII2CoII4CoIII4] (Ln = Eu, Gd, Tb, Dy) clusters

You Zhu Yu
, Yue Qiao Hu
, Yu Hua Guo
, Yong Sheng Niu
, Li Guo Yang
, Hai Xiang Song
, Yan Hong Shen
, Xiao Ming Zheng
, Shao Gang Hou
, Guo Dong Feng

School of Chemistry

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

6 Scopus citations

Abstract

Four unprecedented decanuclear heterometallic [Ln₂CoII4CoIII4] clusters based on a diethanolamine ligand (H₂dea), namely [Eu₂CoII4CoIII4(dea)₈(HCOO)₄(OH)₂(Cl)₂(CH₃OH)₂]Cl₂·4CH₃OH·2H₂O (1), [Gd₂CoII4CoIII4(dea)₈(HCOO)₄(OH)₂(Cl)₂(CH₃OH)₂]Cl₂·4CH₃OH·2H₂O (2), [Tb₂CoII4CoIII4(dea)₈(HCOO)₄(OH)₂(Cl)₂(CH₃OH)₂]Cl₂·2CH₃OH·4H₂O (3) and [Dy₂CoII4CoIII4(dea)₈(HCOO)₄(OH)₂(Cl)₂(CH₃OH)₂]Cl₂·2CH₃OH·4H₂O (4) were synthesized through a facile solution method. Single-crystal X-ray diffraction analyses reveal that complexes 1-4 consist of a [Ln₂CoII4CoIII4] core, which is constructed by bridging a quasi-double cuboidal [Ln₂CoII2CoIII2] core with two [Co^IICo^III] units. Electrospray ionization mass spectrometry (ESI-MS) using methanol solution reveals that complexes 1-4 are stable in the solution, and the clusters undergo three different substitution reactions (Cl^- replaced by OH^-, OH^- replaced by CH₃O^- and HCOO^- replaced by OH^-/CH₃O^-) at the same time in the ionization state. Magnetic susceptibilities reveal ferromagnetic couplings within complexes 3 and 4, and the magnetocaloric effect (MCE) for 2 was also evaluated and the maximum entropy change (-ΔS_m) value reaches 16.3 J kg^-1 K^-1 at about 3 K and 5 T.

Original language	English
Pages (from-to)	10124-10129
Number of pages	6
Journal	Dalton Transactions
Volume	47
Issue number	30
DOIs	https://doi.org/10.1039/c8dt01252k
State	Published - 2018

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@article{50c85f1aa9e7470ca54fb37fdcba3573,

title = "Syntheses, crystal-solution structures and magnetic properties of a series of decanuclear heterometallic [LnIII2CoII4CoIII4] (Ln = Eu, Gd, Tb, Dy) clusters",

abstract = "Four unprecedented decanuclear heterometallic [Ln2CoII4CoIII4] clusters based on a diethanolamine ligand (H2dea), namely [Eu2CoII4CoIII4(dea)8(HCOO)4(OH)2(Cl)2(CH3OH)2]Cl2·4CH3OH·2H2O (1), [Gd2CoII4CoIII4(dea)8(HCOO)4(OH)2(Cl)2(CH3OH)2]Cl2·4CH3OH·2H2O (2), [Tb2CoII4CoIII4(dea)8(HCOO)4(OH)2(Cl)2(CH3OH)2]Cl2·2CH3OH·4H2O (3) and [Dy2CoII4CoIII4(dea)8(HCOO)4(OH)2(Cl)2(CH3OH)2]Cl2·2CH3OH·4H2O (4) were synthesized through a facile solution method. Single-crystal X-ray diffraction analyses reveal that complexes 1-4 consist of a [Ln2CoII4CoIII4] core, which is constructed by bridging a quasi-double cuboidal [Ln2CoII2CoIII2] core with two [CoIICoIII] units. Electrospray ionization mass spectrometry (ESI-MS) using methanol solution reveals that complexes 1-4 are stable in the solution, and the clusters undergo three different substitution reactions (Cl- replaced by OH-, OH- replaced by CH3O- and HCOO- replaced by OH-/CH3O-) at the same time in the ionization state. Magnetic susceptibilities reveal ferromagnetic couplings within complexes 3 and 4, and the magnetocaloric effect (MCE) for 2 was also evaluated and the maximum entropy change (-ΔSm) value reaches 16.3 J kg-1 K-1 at about 3 K and 5 T.",

author = "Yu, \{You Zhu\} and Hu, \{Yue Qiao\} and Guo, \{Yu Hua\} and Niu, \{Yong Sheng\} and Yang, \{Li Guo\} and Song, \{Hai Xiang\} and Shen, \{Yan Hong\} and Zheng, \{Xiao Ming\} and Hou, \{Shao Gang\} and Feng, \{Guo Dong\}",

note = "Publisher Copyright: {\textcopyright} The Royal Society of Chemistry.",

year = "2018",

doi = "10.1039/c8dt01252k",

language = "英语",

volume = "47",

pages = "10124--10129",

journal = "Dalton Transactions",

issn = "1477-9226",

publisher = "Royal Society of Chemistry",

number = "30",

}

TY - JOUR

T1 - Syntheses, crystal-solution structures and magnetic properties of a series of decanuclear heterometallic [LnIII2CoII4CoIII4] (Ln = Eu, Gd, Tb, Dy) clusters

AU - Yu, You Zhu

AU - Hu, Yue Qiao

AU - Guo, Yu Hua

AU - Niu, Yong Sheng

AU - Yang, Li Guo

AU - Song, Hai Xiang

AU - Shen, Yan Hong

AU - Zheng, Xiao Ming

AU - Hou, Shao Gang

AU - Feng, Guo Dong

PY - 2018

Y1 - 2018

N2 - Four unprecedented decanuclear heterometallic [Ln2CoII4CoIII4] clusters based on a diethanolamine ligand (H2dea), namely [Eu2CoII4CoIII4(dea)8(HCOO)4(OH)2(Cl)2(CH3OH)2]Cl2·4CH3OH·2H2O (1), [Gd2CoII4CoIII4(dea)8(HCOO)4(OH)2(Cl)2(CH3OH)2]Cl2·4CH3OH·2H2O (2), [Tb2CoII4CoIII4(dea)8(HCOO)4(OH)2(Cl)2(CH3OH)2]Cl2·2CH3OH·4H2O (3) and [Dy2CoII4CoIII4(dea)8(HCOO)4(OH)2(Cl)2(CH3OH)2]Cl2·2CH3OH·4H2O (4) were synthesized through a facile solution method. Single-crystal X-ray diffraction analyses reveal that complexes 1-4 consist of a [Ln2CoII4CoIII4] core, which is constructed by bridging a quasi-double cuboidal [Ln2CoII2CoIII2] core with two [CoIICoIII] units. Electrospray ionization mass spectrometry (ESI-MS) using methanol solution reveals that complexes 1-4 are stable in the solution, and the clusters undergo three different substitution reactions (Cl- replaced by OH-, OH- replaced by CH3O- and HCOO- replaced by OH-/CH3O-) at the same time in the ionization state. Magnetic susceptibilities reveal ferromagnetic couplings within complexes 3 and 4, and the magnetocaloric effect (MCE) for 2 was also evaluated and the maximum entropy change (-ΔSm) value reaches 16.3 J kg-1 K-1 at about 3 K and 5 T.

AB - Four unprecedented decanuclear heterometallic [Ln2CoII4CoIII4] clusters based on a diethanolamine ligand (H2dea), namely [Eu2CoII4CoIII4(dea)8(HCOO)4(OH)2(Cl)2(CH3OH)2]Cl2·4CH3OH·2H2O (1), [Gd2CoII4CoIII4(dea)8(HCOO)4(OH)2(Cl)2(CH3OH)2]Cl2·4CH3OH·2H2O (2), [Tb2CoII4CoIII4(dea)8(HCOO)4(OH)2(Cl)2(CH3OH)2]Cl2·2CH3OH·4H2O (3) and [Dy2CoII4CoIII4(dea)8(HCOO)4(OH)2(Cl)2(CH3OH)2]Cl2·2CH3OH·4H2O (4) were synthesized through a facile solution method. Single-crystal X-ray diffraction analyses reveal that complexes 1-4 consist of a [Ln2CoII4CoIII4] core, which is constructed by bridging a quasi-double cuboidal [Ln2CoII2CoIII2] core with two [CoIICoIII] units. Electrospray ionization mass spectrometry (ESI-MS) using methanol solution reveals that complexes 1-4 are stable in the solution, and the clusters undergo three different substitution reactions (Cl- replaced by OH-, OH- replaced by CH3O- and HCOO- replaced by OH-/CH3O-) at the same time in the ionization state. Magnetic susceptibilities reveal ferromagnetic couplings within complexes 3 and 4, and the magnetocaloric effect (MCE) for 2 was also evaluated and the maximum entropy change (-ΔSm) value reaches 16.3 J kg-1 K-1 at about 3 K and 5 T.

UR - https://www.scopus.com/pages/publications/85050872330

U2 - 10.1039/c8dt01252k

DO - 10.1039/c8dt01252k

M3 - 文章

C2 - 30003204

AN - SCOPUS:85050872330

SN - 1477-9226

VL - 47

SP - 10124

EP - 10129

JO - Dalton Transactions

JF - Dalton Transactions

IS - 30

ER -

Syntheses, crystal-solution structures and magnetic properties of a series of decanuclear heterometallic [LnIII2CoII4CoIII4] (Ln = Eu, Gd, Tb, Dy) clusters

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