Ligand field effect tuned magnetic behaviors of two chain compounds based on MnIII3O units: From slow magnetic relaxation to metamagnetism

Yue Ling Bai; Xiaoli Bao; Shourong Zhu; Jianhui Fang; Jun Tao

doi:10.1039/c2dt31944f

Ligand field effect tuned magnetic behaviors of two chain compounds based on Mn^III₃O units: From slow magnetic relaxation to metamagnetism

Yue Ling Bai^*, Xiaoli Bao, Shourong Zhu, Jianhui Fang, Jun Tao

^*Corresponding author for this work

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

18 Citations (Scopus)

Abstract

Two chain compounds built with anti-anti acetate bridged Mn ^III₃O units, [Mn₃O(Clppz)₃(EtOH) ₄(OAc)]_n (1) and [Mn₃O(Clppz) ₃(EtOH)₂(OAc)]_n (2), were synthesized and characterized. The magnetic studies indicate that 1 is a single-chain magnet with two slow magnetization relaxation processes which has for the first time been found in this type of chain complex, while 2 shows a field-induced metamagnetic behavior. The quite different magnetic behaviors resulted from the different number of coordinated ethanol molecules on the Mn^III ₃O unit, four ethanol molecules for 1, and two ethanol molecules for 2. The best fittings to the experimental magnetic susceptibilities gave J ₁ = -2.72 cm^-1, J₂ = -4.34 cm^-1, zJ = 1.24 cm^-1 for 1 and J₁ = -5.91 cm^-1, J ₂ = -0.98 cm^-1, zJ = 1.71 for 2 above 30 K. The positive zJ values indicate the presence of weak ferromagnetic interactions between the trinuclear units via acetate bridges in 1 and 2.

Original language	English
Pages (from-to)	1033-1038
Number of pages	6
Journal	Dalton Transactions
Volume	42
Issue number	4
DOIs	https://doi.org/10.1039/c2dt31944f
Publication status	Published - 28 Jan 2013
Externally published	Yes

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title = "Ligand field effect tuned magnetic behaviors of two chain compounds based on MnIII3O units: From slow magnetic relaxation to metamagnetism",

abstract = "Two chain compounds built with anti-anti acetate bridged Mn III3O units, [Mn3O(Clppz)3(EtOH) 4(OAc)]n (1) and [Mn3O(Clppz) 3(EtOH)2(OAc)]n (2), were synthesized and characterized. The magnetic studies indicate that 1 is a single-chain magnet with two slow magnetization relaxation processes which has for the first time been found in this type of chain complex, while 2 shows a field-induced metamagnetic behavior. The quite different magnetic behaviors resulted from the different number of coordinated ethanol molecules on the MnIII 3O unit, four ethanol molecules for 1, and two ethanol molecules for 2. The best fittings to the experimental magnetic susceptibilities gave J 1 = -2.72 cm-1, J2 = -4.34 cm-1, zJ = 1.24 cm-1 for 1 and J1 = -5.91 cm-1, J 2 = -0.98 cm-1, zJ = 1.71 for 2 above 30 K. The positive zJ values indicate the presence of weak ferromagnetic interactions between the trinuclear units via acetate bridges in 1 and 2.",

author = "Bai, {Yue Ling} and Xiaoli Bao and Shourong Zhu and Jianhui Fang and Jun Tao",

year = "2013",

month = jan,

day = "28",

doi = "10.1039/c2dt31944f",

language = "English",

volume = "42",

pages = "1033--1038",

journal = "Dalton Transactions",

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TY - JOUR

T1 - Ligand field effect tuned magnetic behaviors of two chain compounds based on MnIII3O units

T2 - From slow magnetic relaxation to metamagnetism

AU - Bai, Yue Ling

AU - Bao, Xiaoli

AU - Zhu, Shourong

AU - Fang, Jianhui

AU - Tao, Jun

PY - 2013/1/28

Y1 - 2013/1/28

N2 - Two chain compounds built with anti-anti acetate bridged Mn III3O units, [Mn3O(Clppz)3(EtOH) 4(OAc)]n (1) and [Mn3O(Clppz) 3(EtOH)2(OAc)]n (2), were synthesized and characterized. The magnetic studies indicate that 1 is a single-chain magnet with two slow magnetization relaxation processes which has for the first time been found in this type of chain complex, while 2 shows a field-induced metamagnetic behavior. The quite different magnetic behaviors resulted from the different number of coordinated ethanol molecules on the MnIII 3O unit, four ethanol molecules for 1, and two ethanol molecules for 2. The best fittings to the experimental magnetic susceptibilities gave J 1 = -2.72 cm-1, J2 = -4.34 cm-1, zJ = 1.24 cm-1 for 1 and J1 = -5.91 cm-1, J 2 = -0.98 cm-1, zJ = 1.71 for 2 above 30 K. The positive zJ values indicate the presence of weak ferromagnetic interactions between the trinuclear units via acetate bridges in 1 and 2.

AB - Two chain compounds built with anti-anti acetate bridged Mn III3O units, [Mn3O(Clppz)3(EtOH) 4(OAc)]n (1) and [Mn3O(Clppz) 3(EtOH)2(OAc)]n (2), were synthesized and characterized. The magnetic studies indicate that 1 is a single-chain magnet with two slow magnetization relaxation processes which has for the first time been found in this type of chain complex, while 2 shows a field-induced metamagnetic behavior. The quite different magnetic behaviors resulted from the different number of coordinated ethanol molecules on the MnIII 3O unit, four ethanol molecules for 1, and two ethanol molecules for 2. The best fittings to the experimental magnetic susceptibilities gave J 1 = -2.72 cm-1, J2 = -4.34 cm-1, zJ = 1.24 cm-1 for 1 and J1 = -5.91 cm-1, J 2 = -0.98 cm-1, zJ = 1.71 for 2 above 30 K. The positive zJ values indicate the presence of weak ferromagnetic interactions between the trinuclear units via acetate bridges in 1 and 2.

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U2 - 10.1039/c2dt31944f

DO - 10.1039/c2dt31944f

M3 - Article

AN - SCOPUS:84871956545

SN - 1477-9226

VL - 42

SP - 1033

EP - 1038

JO - Dalton Transactions

JF - Dalton Transactions

IS - 4

ER -

Ligand field effect tuned magnetic behaviors of two chain compounds based on Mn^III₃O units: From slow magnetic relaxation to metamagnetism

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