Magnetic "Molecular Oligomers" Based on Decametallic Supertetrahedra: A Giant Mn49 Cuboctahedron and its Mn25Na4 Fragment

被引：63
作者：
Manoli, Maria [1 ]
Alexandrou, Sofia [1 ]
Pham, Linh [2 ]
Lorusso, Giulia [3 ,4 ]
Wernsdorfer, Wolfgang [5 ]
Evangelisti, Marco [3 ,4 ]
Christou, George [2 ]
Tasiopoulos, Anastasios J. [1 ]
机构：
[1] Univ Cyprus, Dept Chem, CY-1678 Nicosia, Cyprus
[2] Univ Florida, Dept Chem, Gainesville, FL 32611 USA
[3] Univ Zaragoza, CSIC, Inst Ciencia Mat Aragon, E-50009 Zaragoza, Spain
[4] Univ Zaragoza, CSIC, Dept Fis Mat Condensada, E-50009 Zaragoza, Spain
[5] CNRS, Inst Neel, F-38042 Grenoble 9, France
来源：
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION | 2016年 / 55卷 / 02期
基金：
美国国家科学基金会;
关键词：
cluster compounds; magnetic properties; manganese; O ligands; single-molecule magnets; SPIN GROUND-STATE; CLUSTERS; AGGREGATE; SYMMETRY; RINGS; ASSEMBLIES;
D O I：
10.1002/anie.201509461
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Two nanosized Mn-49 and Mn25Na4 clusters based on analogues of the high-spin (S=22) [Mn-III Mn-6(II) (4)(mu(4)-O)(4)](18+) supertetrahedral core are reported. Mn-49 and Mn25Na4 complexes consist of eight and four decametallic supertetrahedral subunits, respectively, display high virtual symmetry (Oh), and are unique examples of clusters based on a large number of tightly linked high nuclearity magnetic units. The complexes also have large spin ground-state values (Mn-49: S= 61/2; Mn25Na4: S= 51/2) with the Mn49 cluster displaying single-molecule magnet (SMM) behavior and being the second largest reported homometallic SMM.
引用
收藏
页码：679 / 684
页数：6
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