Slow magnetic relaxation of a {MnIIINaI}n zig-zag chain based single ion magnet

Zhang，Shao Liang1; Ma，De Yang1; Zhao，Xin Hua2; Liu，Yu Wen1; Wang，Yan Lan1; Li，Shan Shan3

2024-03-15

10.1016/j.molstruc.2023.137285

Journal of Molecular Structure   影响因子和分区

0022-2860

The synthesis using organic Schiff base ligands Hvalen, and organic sulfonate ligands Na(4-HBS) in conjunction with Mn(Ac)⋅2HO, produces a one-dimensional coordination polymer with the formula {[Mn(valen)Na(4-HBS)]⋅2CHOH}(1) [Hvalen=6,6′-((1E,1′E)-(ethane-1,2-diylbis(azaneylylidene))bis(methaneylylidene))bis(2-methoxyphenol); Na(4-HBS)= Sodium 4-hydroxybenzenesulfonate]. Single crystal X-ray diffraction analysis reveals that complex 1 consist of neutral chains with one [Mn(valen)Na] and two 4-HBSmoieties, in which the Mn(III) adopts an elongated octahedral geometry and Na(I) adopts a distorted pentagonal pyramid geometry, respectively. Magnetic investigations indicate the important magnetic anisotropy in the six-coordinated Mn(III) with the zero-field splitting parameter D = -3.2 cm. AC measurements suggest that complex 1 displays characteristics of slow magnetic relaxation under a 2000 Oe DC field, indicative of single ion magnet (SIM) behaviour. The effective energy barriers and the pre-exponential factor for complex 1 are determined to be 10.5 cm, and 1.36 × 10 s, respectively. This research reports not only a rare Mn(III) SIM molecular complex but also provide a potential approach to construct SIM chains.

Magnetic properties Manganese Single-ion magnet Single-molecule magnet

SCI

英语

其他

CHEMISTRY

2-s2.0-85179623969

Scopus

1.Institution of Functional Organic Molecules and Materials,School of Chemistry and Chemical Engineering,Liaocheng University,Liaocheng,252059,China
2.Department of Chemistry,South University of Science and Technology of China,Shenzhen,518055,China
3.School of Geography and Environment,Liaocheng University,Liaocheng,252059,China

Zhang，Shao Liang,Ma，De Yang,Zhao，Xin Hua,et al. Slow magnetic relaxation of a {MnIIINaI}n zig-zag chain based single ion magnet[J]. Journal of Molecular Structure,2024,1300.

Zhang，Shao Liang,Ma，De Yang,Zhao，Xin Hua,Liu，Yu Wen,Wang，Yan Lan,&Li，Shan Shan.(2024).Slow magnetic relaxation of a {MnIIINaI}n zig-zag chain based single ion magnet.Journal of Molecular Structure,1300.

Zhang，Shao Liang,et al."Slow magnetic relaxation of a {MnIIINaI}n zig-zag chain based single ion magnet".Journal of Molecular Structure 1300(2024).