On Approaching the Limit of Molecular Magnetic Anisotropy: A Near-Perfect Pentagonal Bipyramidal Dysprosium(III) Single-Molecule Magnet

You Song Ding; Nicholas F. Chilton; Richard E.P. Winpenny; Yan Zhen Zheng

doi:10.1002/anie.201609685

On Approaching the Limit of Molecular Magnetic Anisotropy: A Near-Perfect Pentagonal Bipyramidal Dysprosium(III) Single-Molecule Magnet

You Song Ding
, Nicholas F. Chilton
, Richard E.P. Winpenny
, Yan Zhen Zheng

School of Materials Science and Engineering

Xi'an Jiaotong University
University of Manchester

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

884 Scopus citations

Abstract

We report a monometallic dysprosium complex, [Dy(O^tBu)₂(py)₅][BPh₄] (5), that shows the largest effective energy barrier to magnetic relaxation of U_eff=1815(1) K. The massive magnetic anisotropy is due to bis-trans-disposed tert-butoxide ligands with weak equatorial pyridine donors, approaching proposed schemes for high-temperature single-molecule magnets (SMMs). The blocking temperature, T_B, is 14 K, defined by zero-field-cooled magnetization experiments, and is the largest for any monometallic complex and equal with the current record for [Tb₂N₂{N(SiMe₃)₂}₄(THF)₂].

Original language	English
Pages (from-to)	16071-16074
Number of pages	4
Journal	Angewandte Chemie - International Edition
Volume	55
Issue number	52
DOIs	https://doi.org/10.1002/anie.201609685
State	Published - 23 Dec 2016

Keywords

dysprosium
magnetic anisotropy
magnetic relaxation
single-molecule magnets

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10.1002/anie.201609685

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title = "On Approaching the Limit of Molecular Magnetic Anisotropy: A Near-Perfect Pentagonal Bipyramidal Dysprosium(III) Single-Molecule Magnet",

abstract = "We report a monometallic dysprosium complex, [Dy(OtBu)2(py)5][BPh4] (5), that shows the largest effective energy barrier to magnetic relaxation of Ueff=1815(1) K. The massive magnetic anisotropy is due to bis-trans-disposed tert-butoxide ligands with weak equatorial pyridine donors, approaching proposed schemes for high-temperature single-molecule magnets (SMMs). The blocking temperature, TB, is 14 K, defined by zero-field-cooled magnetization experiments, and is the largest for any monometallic complex and equal with the current record for [Tb2N2\{N(SiMe3)2\}4(THF)2].",

keywords = "dysprosium, magnetic anisotropy, magnetic relaxation, single-molecule magnets",

author = "Ding, \{You Song\} and Chilton, \{Nicholas F.\} and Winpenny, \{Richard E.P.\} and Zheng, \{Yan Zhen\}",

note = "Publisher Copyright: {\textcopyright} 2016 Wiley-VCH Verlag GmbH \& Co. KGaA, Weinheim",

year = "2016",

month = dec,

day = "23",

doi = "10.1002/anie.201609685",

language = "英语",

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TY - JOUR

T1 - On Approaching the Limit of Molecular Magnetic Anisotropy

T2 - A Near-Perfect Pentagonal Bipyramidal Dysprosium(III) Single-Molecule Magnet

AU - Ding, You Song

AU - Chilton, Nicholas F.

AU - Winpenny, Richard E.P.

AU - Zheng, Yan Zhen

PY - 2016/12/23

Y1 - 2016/12/23

N2 - We report a monometallic dysprosium complex, [Dy(OtBu)2(py)5][BPh4] (5), that shows the largest effective energy barrier to magnetic relaxation of Ueff=1815(1) K. The massive magnetic anisotropy is due to bis-trans-disposed tert-butoxide ligands with weak equatorial pyridine donors, approaching proposed schemes for high-temperature single-molecule magnets (SMMs). The blocking temperature, TB, is 14 K, defined by zero-field-cooled magnetization experiments, and is the largest for any monometallic complex and equal with the current record for [Tb2N2{N(SiMe3)2}4(THF)2].

AB - We report a monometallic dysprosium complex, [Dy(OtBu)2(py)5][BPh4] (5), that shows the largest effective energy barrier to magnetic relaxation of Ueff=1815(1) K. The massive magnetic anisotropy is due to bis-trans-disposed tert-butoxide ligands with weak equatorial pyridine donors, approaching proposed schemes for high-temperature single-molecule magnets (SMMs). The blocking temperature, TB, is 14 K, defined by zero-field-cooled magnetization experiments, and is the largest for any monometallic complex and equal with the current record for [Tb2N2{N(SiMe3)2}4(THF)2].

KW - dysprosium

KW - magnetic anisotropy

KW - magnetic relaxation

KW - single-molecule magnets

UR - https://www.scopus.com/pages/publications/85005999199

U2 - 10.1002/anie.201609685

DO - 10.1002/anie.201609685

M3 - 文章

AN - SCOPUS:85005999199

SN - 1433-7851

VL - 55

SP - 16071

EP - 16074

JO - Angewandte Chemie - International Edition

JF - Angewandte Chemie - International Edition

IS - 52

ER -

On Approaching the Limit of Molecular Magnetic Anisotropy: A Near-Perfect Pentagonal Bipyramidal Dysprosium(III) Single-Molecule Magnet

Abstract

Keywords

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