Synthesis and magnetochemistry of heterometallic triangular Fe2III LnIII (Ln = La, Gd, Tb, Dy, and Ho) and Fe2IIIYIII complexes

被引：8
|
作者：
Singh, Namrata [1 ]
Das Gupta, Sayak [2 ]
Butcher, Raymond J. [3 ]
Christou, George [2 ]
机构：
[1] Indian Inst Technol Kanpur, Dept Chem, Kanpur 208016, Uttar Pradesh, India
[2] Univ Florida, Dept Chem, Gainesville, FL 32611 USA
[3] Howard Univ, Dept Chem, Washington, DC 20059 USA
来源：
DALTON TRANSACTIONS | 2017年 / 46卷 / 24期
基金：
美国国家科学基金会;
关键词：
SINGLE-MOLECULE-MAGNET; ANISOTROPY BARRIER; METAL-IONS; SLOW RELAXATION; FE-III; MAGNETIZATION; CLUSTERS; BEHAVIOR; QUANTUM; SPIN;
D O I：
10.1039/c7dt00949f
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
A series of Fe(2)Ln (Ln = La, Gd, Tb, Dy and Ho) and Fe2Y complexes have been synthesized via metal substitution and characterized by single crystal X-ray diffraction. All the molecules are isostructural and have a Fe(2)LnO triangular core with the oxygen atom existing as an mu(3)-oxo(2-) anion. DC and AC magnetic susceptibility studies were performed on all the molecules. For Fe(2)Ln (Ln = Gd, La) and Fe2Y, the data were fitted to Van Vleck equations and the magnetic coupling constants were obtained. In all cases, the two Fe(III) spins were found to be antiparallel to each other in the ground state leaving the heterometal to remain essentially uncoupled.
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页码：7897 / 7903
页数：7
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