High-frequency EPR study on Cu4Cu- and Co4Co-metallacrown complexes

被引：2
|
作者：
Koo, C. [1 ]
Park, J. [1 ]
Butscher, J. [1 ]
Rentschler, E. [2 ]
Klingeler, R. [1 ,3 ]
机构：
[1] Heidelberg Univ, Kirchhoff Inst Phys, INF 227, D-69120 Heidelberg, Germany
[2] Johannes Gutenberg Univ Mainz, Inst Anorgan & Analyt Chem, D-55128 Mainz, Germany
[3] Heidelberg Univ, Ctr Adv Mat, INF 225, D-69120 Heidelberg, Germany
来源：
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2019年 / 477卷
关键词：
MOF; Magnetism; Magnetic anisotropy; High-frequency electron paramagnetic resonance; STATE;
D O I：
10.1016/j.jmmm.2019.01.038
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
High-frequency/high-field electron paramagnetic resonance studies on two homonuclear 12-MC-4 metallacrown complexes Cu4Cu and Co4Co are presented. For Cu4Cu, our data imply axial-type g-anisotropy with g(x) = 2.03 +/- 0.01, g(y) = 2.04 +/- 0.01, and g(z) = 2.23 +/- 0.01, yielding g = 2.10 +/- 0.02. No significant zero field splitting (ZFS) of the ground state mode is observed. In Co4Co, we find a m(S) = +/- 3/2 ground state with g = 2.66. The data suggest large anisotropy D of negative sign.
引用
收藏
页码：340 / 343
页数：4
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