Two Dysprosium(III)-Based Single-Molecule Magnets Derived from 1,10-Phenanthroline Ligands and Different Anions as Bridging Groups

Shixiong She; Gangping Su; Bo Wang; Quan Lei; Yan Yang; Li Gong; Beibei Liu

doi:10.1002/ejic.201700018

Two Dysprosium(III)-Based Single-Molecule Magnets Derived from 1,10-Phenanthroline Ligands and Different Anions as Bridging Groups

Shixiong She^*, Gangping Su, Bo Wang, Quan Lei, Yan Yang, Li Gong, Beibei Liu

^*Corresponding author for this work

Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaper › Journal article › Research › peer-review

10 Citations (Scopus)

Abstract

Two Dy compounds, [Dy₂(Phen)₂(CH₃COO)₆] (1; Phen = 1,10-phenanthroline) and [Dy(Phen)₂(NO₃)₃] (2), were obtained by the reactions of Phen with different dysprosium salts containing different anions, which act as bridging groups and greatly affect the coordination polyhedra of the metal ions. In the former complex, the Dy^III ions are bridged by acetate anions and adopt a spherical capped square antiprismatic (C_4v) coordination environment, whereas a bicapped square antiprism (D_4d) was observed for 2, in which the Dy^III ions are bridged by nitrate anions. Static and dynamic magnetic measurements revealed that both compounds display slow magnetic relaxation but with fast quantum tunneling of magnetization (QTM). In an applied direct-current (dc) field, the QTM was suppressed, and two slow magnetic relaxation processes occurred for both compounds. Comparative studies on the magnetic properties indicate how the ligand field and the local geometric symmetry of the magnetic anisotropy of the Dy^III center leads to differing magnetic behavior.

Original language	English
Journal	European Journal of Inorganic Chemistry
Volume	2017
Issue	18
Pages (from-to)	2406-2412
Number of pages	7
ISSN	1434-1948
DOIs	https://doi.org/10.1002/ejic.201700018
Publication status	Published - 2017
Externally published	Yes

Keywords

Bridging ligands
Lanthanides
Magnetic properties
Slow magnetic relaxation

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10.1002/ejic.201700018

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@article{fa089b8bdbc248ed8c33d1795ea0fcd7,

title = "Two Dysprosium(III)-Based Single-Molecule Magnets Derived from 1,10-Phenanthroline Ligands and Different Anions as Bridging Groups",

abstract = "Two Dy compounds, [Dy2(Phen)2(CH3COO)6] (1; Phen = 1,10-phenanthroline) and [Dy(Phen)2(NO3)3] (2), were obtained by the reactions of Phen with different dysprosium salts containing different anions, which act as bridging groups and greatly affect the coordination polyhedra of the metal ions. In the former complex, the DyIII ions are bridged by acetate anions and adopt a spherical capped square antiprismatic (C4v) coordination environment, whereas a bicapped square antiprism (D4d) was observed for 2, in which the DyIII ions are bridged by nitrate anions. Static and dynamic magnetic measurements revealed that both compounds display slow magnetic relaxation but with fast quantum tunneling of magnetization (QTM). In an applied direct-current (dc) field, the QTM was suppressed, and two slow magnetic relaxation processes occurred for both compounds. Comparative studies on the magnetic properties indicate how the ligand field and the local geometric symmetry of the magnetic anisotropy of the DyIII center leads to differing magnetic behavior.",

keywords = "Bridging ligands, Lanthanides, Magnetic properties, Slow magnetic relaxation",

author = "Shixiong She and Gangping Su and Bo Wang and Quan Lei and Yan Yang and Li Gong and Beibei Liu",

note = "Publisher Copyright: {\textcopyright} 2017 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim",

year = "2017",

doi = "10.1002/ejic.201700018",

language = "English",

volume = "2017",

pages = "2406--2412",

journal = "European Journal of Inorganic Chemistry",

issn = "1434-1948",

publisher = "Wiley-VCH Verlag",

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}

Two Dysprosium(III)-Based Single-Molecule Magnets Derived from 1,10-Phenanthroline Ligands and Different Anions as Bridging Groups. / She, Shixiong; Su, Gangping; Wang, Bo et al.
In: European Journal of Inorganic Chemistry, Vol. 2017, No. 18, 2017, p. 2406-2412.

Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaper › Journal article › Research › peer-review

TY - JOUR

T1 - Two Dysprosium(III)-Based Single-Molecule Magnets Derived from 1,10-Phenanthroline Ligands and Different Anions as Bridging Groups

AU - She, Shixiong

AU - Su, Gangping

AU - Wang, Bo

AU - Lei, Quan

AU - Yang, Yan

AU - Gong, Li

AU - Liu, Beibei

PY - 2017

Y1 - 2017

N2 - Two Dy compounds, [Dy2(Phen)2(CH3COO)6] (1; Phen = 1,10-phenanthroline) and [Dy(Phen)2(NO3)3] (2), were obtained by the reactions of Phen with different dysprosium salts containing different anions, which act as bridging groups and greatly affect the coordination polyhedra of the metal ions. In the former complex, the DyIII ions are bridged by acetate anions and adopt a spherical capped square antiprismatic (C4v) coordination environment, whereas a bicapped square antiprism (D4d) was observed for 2, in which the DyIII ions are bridged by nitrate anions. Static and dynamic magnetic measurements revealed that both compounds display slow magnetic relaxation but with fast quantum tunneling of magnetization (QTM). In an applied direct-current (dc) field, the QTM was suppressed, and two slow magnetic relaxation processes occurred for both compounds. Comparative studies on the magnetic properties indicate how the ligand field and the local geometric symmetry of the magnetic anisotropy of the DyIII center leads to differing magnetic behavior.

AB - Two Dy compounds, [Dy2(Phen)2(CH3COO)6] (1; Phen = 1,10-phenanthroline) and [Dy(Phen)2(NO3)3] (2), were obtained by the reactions of Phen with different dysprosium salts containing different anions, which act as bridging groups and greatly affect the coordination polyhedra of the metal ions. In the former complex, the DyIII ions are bridged by acetate anions and adopt a spherical capped square antiprismatic (C4v) coordination environment, whereas a bicapped square antiprism (D4d) was observed for 2, in which the DyIII ions are bridged by nitrate anions. Static and dynamic magnetic measurements revealed that both compounds display slow magnetic relaxation but with fast quantum tunneling of magnetization (QTM). In an applied direct-current (dc) field, the QTM was suppressed, and two slow magnetic relaxation processes occurred for both compounds. Comparative studies on the magnetic properties indicate how the ligand field and the local geometric symmetry of the magnetic anisotropy of the DyIII center leads to differing magnetic behavior.

KW - Bridging ligands

KW - Lanthanides

KW - Magnetic properties

KW - Slow magnetic relaxation

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U2 - 10.1002/ejic.201700018

DO - 10.1002/ejic.201700018

M3 - Journal article

AN - SCOPUS:85019179600

SN - 1434-1948

VL - 2017

SP - 2406

EP - 2412

JO - European Journal of Inorganic Chemistry

JF - European Journal of Inorganic Chemistry

IS - 18

ER -

Two Dysprosium(III)-Based Single-Molecule Magnets Derived from 1,10-Phenanthroline Ligands and Different Anions as Bridging Groups

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