Syntheses of imidazole template Fe4 sulfate clusters and iron-DMSO complex mediated by Brønsted acid ionic liquids

Qian Qian Luo; He Chun Lin; Chun Hua Luo; Yuan Yuan Zhang; Hui Peng

doi:10.11862/CJIC.2017.259

Syntheses of imidazole template Fe₄ sulfate clusters and iron-DMSO complex mediated by Brønsted acid ionic liquids

Qian Qian Luo, He Chun Lin, Chun Hua Luo, Yuan Yuan Zhang, Hui Peng

School of Physics and Electronic Science

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

Abstract

Imidazole template iron sulfate clusters, [HMIM]₂[Fe₂O(SO₄)₃(DMSO)₂] • 0.5DMSO (1) and [HPIM]₄[Fe₄O₂ (SO₄)₆(DMSO)₄] • 2MeCN (2), were synthesized via the reaction of FeCl₂ with Brønsted acidic ionic liquid [HRIM] [HSO₄] using ethanol as solvent. The clusters crystallize in triclinic with a space group P(image found). The core contains 4 iron atoms, which are coplanar connected by the central μ₃-O bridge, μ₂-O and μ₃-O bridge of SO₄ groups. Protonated imidazoliums are the counter cations for the balance of charges of the core. Variable temperature magnetic susceptibility measurements of the Fe₄ sulfate clusters reveal weak antiferromagnetic exchange interactions between the metal centers. In contrast, the reaction of FeCl₃ under the similar experimental conditions didn’t produce the similar cluster structure, whereas iron-DMSO complex [FeCl₂(DMSO)₄][EtSO₄] • DMSO (3) was obtained.

Original language	English
Pages (from-to)	2186-2192
Number of pages	7
Journal	Chinese Journal of Inorganic Chemistry
Volume	33
Issue number	12
DOIs	https://doi.org/10.11862/CJIC.2017.259
State	Published - 2017

Keywords

Antiferromagnetic
Brnsted acidic ionic liquid
Open-framework
Polynuclear ferric cluster

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@article{e44c36d119ed46c8afb1921ff0e31717,

title = "Syntheses of imidazole template Fe4 sulfate clusters and iron-DMSO complex mediated by Br{\o}nsted acid ionic liquids",

abstract = "Imidazole template iron sulfate clusters, [HMIM]2[Fe2O(SO4)3(DMSO)2] • 0.5DMSO (1) and [HPIM]4[Fe4O2 (SO4)6(DMSO)4] • 2MeCN (2), were synthesized via the reaction of FeCl2 with Br{\o}nsted acidic ionic liquid [HRIM] [HSO4] using ethanol as solvent. The clusters crystallize in triclinic with a space group P(image found). The core contains 4 iron atoms, which are coplanar connected by the central μ3-O bridge, μ2-O and μ3-O bridge of SO4 groups. Protonated imidazoliums are the counter cations for the balance of charges of the core. Variable temperature magnetic susceptibility measurements of the Fe4 sulfate clusters reveal weak antiferromagnetic exchange interactions between the metal centers. In contrast, the reaction of FeCl3 under the similar experimental conditions didn{\textquoteright}t produce the similar cluster structure, whereas iron-DMSO complex [FeCl2(DMSO)4][EtSO4] • DMSO (3) was obtained.",

keywords = "Antiferromagnetic, Brnsted acidic ionic liquid, Open-framework, Polynuclear ferric cluster",

author = "Luo, \{Qian Qian\} and Lin, \{He Chun\} and Luo, \{Chun Hua\} and Zhang, \{Yuan Yuan\} and Hui Peng",

year = "2017",

doi = "10.11862/CJIC.2017.259",

language = "英语",

volume = "33",

pages = "2186--2192",

journal = "Chinese Journal of Inorganic Chemistry",

issn = "1001-4861",

publisher = "Chinese Chemical Society",

number = "12",

}

TY - JOUR

T1 - Syntheses of imidazole template Fe4 sulfate clusters and iron-DMSO complex mediated by Brønsted acid ionic liquids

AU - Luo, Qian Qian

AU - Lin, He Chun

AU - Luo, Chun Hua

AU - Zhang, Yuan Yuan

AU - Peng, Hui

PY - 2017

Y1 - 2017

N2 - Imidazole template iron sulfate clusters, [HMIM]2[Fe2O(SO4)3(DMSO)2] • 0.5DMSO (1) and [HPIM]4[Fe4O2 (SO4)6(DMSO)4] • 2MeCN (2), were synthesized via the reaction of FeCl2 with Brønsted acidic ionic liquid [HRIM] [HSO4] using ethanol as solvent. The clusters crystallize in triclinic with a space group P(image found). The core contains 4 iron atoms, which are coplanar connected by the central μ3-O bridge, μ2-O and μ3-O bridge of SO4 groups. Protonated imidazoliums are the counter cations for the balance of charges of the core. Variable temperature magnetic susceptibility measurements of the Fe4 sulfate clusters reveal weak antiferromagnetic exchange interactions between the metal centers. In contrast, the reaction of FeCl3 under the similar experimental conditions didn’t produce the similar cluster structure, whereas iron-DMSO complex [FeCl2(DMSO)4][EtSO4] • DMSO (3) was obtained.

AB - Imidazole template iron sulfate clusters, [HMIM]2[Fe2O(SO4)3(DMSO)2] • 0.5DMSO (1) and [HPIM]4[Fe4O2 (SO4)6(DMSO)4] • 2MeCN (2), were synthesized via the reaction of FeCl2 with Brønsted acidic ionic liquid [HRIM] [HSO4] using ethanol as solvent. The clusters crystallize in triclinic with a space group P(image found). The core contains 4 iron atoms, which are coplanar connected by the central μ3-O bridge, μ2-O and μ3-O bridge of SO4 groups. Protonated imidazoliums are the counter cations for the balance of charges of the core. Variable temperature magnetic susceptibility measurements of the Fe4 sulfate clusters reveal weak antiferromagnetic exchange interactions between the metal centers. In contrast, the reaction of FeCl3 under the similar experimental conditions didn’t produce the similar cluster structure, whereas iron-DMSO complex [FeCl2(DMSO)4][EtSO4] • DMSO (3) was obtained.

KW - Antiferromagnetic

KW - Brnsted acidic ionic liquid

KW - Open-framework

KW - Polynuclear ferric cluster

UR - https://www.scopus.com/pages/publications/85040248389

U2 - 10.11862/CJIC.2017.259

DO - 10.11862/CJIC.2017.259

M3 - 文章

AN - SCOPUS:85040248389

SN - 1001-4861

VL - 33

SP - 2186

EP - 2192

JO - Chinese Journal of Inorganic Chemistry

JF - Chinese Journal of Inorganic Chemistry

IS - 12

ER -

Syntheses of imidazole template Fe₄ sulfate clusters and iron-DMSO complex mediated by Brønsted acid ionic liquids

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Keywords

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