Dimerized p-Semiquinone Radical Anions Stabilized by a Pair of Rare-Earth Metal Ions

Tian Han; Jonatan B. Petersen; Zi-han Li; Yuan-qi Zhai; Andreas Kostopoulos; Fabrizio Ortu; Eric J. L. Mcinnes; Richard E. P. Winpenny; Yan-zhen Zheng

doi:10.1021/acs.inorgchem.0c00503

Dimerized p-Semiquinone Radical Anions Stabilized by a Pair of Rare-Earth Metal Ions

Tian Han
, Jonatan B. Petersen
, Zi-han Li
, Yuan-qi Zhai
, Andreas Kostopoulos
, Fabrizio Ortu
, Eric J. L. Mcinnes
, Richard E. P. Winpenny
, Yan-zhen Zheng

Xi'an Jiaotong University

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

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Abstract

Here we report stable p-quinone-radical-bridged rare-earth complexes involving the ligand tetramethylquinone (QMe4•–). The complexes, {Y[(QMe4)•–Cl2(THF)3]}2 (1) and {Gd[(QMe4)•–Cl2(THF)3]}2 (2), where THF = tetrahydrofuran, are sufficiently stable that we can measure the single-crystal structures and perform magnetic and electron paramagnetic resonance measurements. These studies show the presence of a semiquinone form and that the magnetic interaction between the radicals in the dimer is strong and antiferromagnetic.

Original language	English
Journal	Inorganic Chemistry
Early online date	11 May 2020
DOIs	https://doi.org/10.1021/acs.inorgchem.0c00503
Publication status	E-pub ahead of print - 11 May 2020

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Collison, D. (Academic lead), Mcinnes, E. (Academic lead), Tuna, F. (Academic lead), Bowen, A. (Academic lead), Shanmugam, M. (Senior Technical Specialist), Brookfield, A. (Technical Specialist), Fleming, E. (Other) & Cliff, M. (Core Facility Lead)
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title = "Dimerized p-Semiquinone Radical Anions Stabilized by a Pair of Rare-Earth Metal Ions",

abstract = "Here we report stable p-quinone-radical-bridged rare-earth complexes involving the ligand tetramethylquinone (QMe4•–). The complexes, \{Y[(QMe4)•–Cl2(THF)3]\}2 (1) and \{Gd[(QMe4)•–Cl2(THF)3]\}2 (2), where THF = tetrahydrofuran, are sufficiently stable that we can measure the single-crystal structures and perform magnetic and electron paramagnetic resonance measurements. These studies show the presence of a semiquinone form and that the magnetic interaction between the radicals in the dimer is strong and antiferromagnetic.",

author = "Tian Han and Petersen, \{Jonatan B.\} and Zi-han Li and Yuan-qi Zhai and Andreas Kostopoulos and Fabrizio Ortu and Mcinnes, \{Eric J. L.\} and Winpenny, \{Richard E. P.\} and Yan-zhen Zheng",

year = "2020",

month = may,

day = "11",

doi = "10.1021/acs.inorgchem.0c00503",

language = "English",

journal = "Inorganic Chemistry",

issn = "0020-1669",

publisher = "American Chemical Society",

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TY - JOUR

T1 - Dimerized p-Semiquinone Radical Anions Stabilized by a Pair of Rare-Earth Metal Ions

AU - Han, Tian

AU - Petersen, Jonatan B.

AU - Li, Zi-han

AU - Zhai, Yuan-qi

AU - Kostopoulos, Andreas

AU - Ortu, Fabrizio

AU - Mcinnes, Eric J. L.

AU - Winpenny, Richard E. P.

AU - Zheng, Yan-zhen

PY - 2020/5/11

Y1 - 2020/5/11

N2 - Here we report stable p-quinone-radical-bridged rare-earth complexes involving the ligand tetramethylquinone (QMe4•–). The complexes, {Y[(QMe4)•–Cl2(THF)3]}2 (1) and {Gd[(QMe4)•–Cl2(THF)3]}2 (2), where THF = tetrahydrofuran, are sufficiently stable that we can measure the single-crystal structures and perform magnetic and electron paramagnetic resonance measurements. These studies show the presence of a semiquinone form and that the magnetic interaction between the radicals in the dimer is strong and antiferromagnetic.

AB - Here we report stable p-quinone-radical-bridged rare-earth complexes involving the ligand tetramethylquinone (QMe4•–). The complexes, {Y[(QMe4)•–Cl2(THF)3]}2 (1) and {Gd[(QMe4)•–Cl2(THF)3]}2 (2), where THF = tetrahydrofuran, are sufficiently stable that we can measure the single-crystal structures and perform magnetic and electron paramagnetic resonance measurements. These studies show the presence of a semiquinone form and that the magnetic interaction between the radicals in the dimer is strong and antiferromagnetic.

U2 - 10.1021/acs.inorgchem.0c00503

DO - 10.1021/acs.inorgchem.0c00503

M3 - Article

SN - 0020-1669

JO - Inorganic Chemistry

JF - Inorganic Chemistry

ER -

Dimerized p-Semiquinone Radical Anions Stabilized by a Pair of Rare-Earth Metal Ions

Abstract

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