Iron(III) carboxylate/aminoalcohol coordination clusters with propeller-shaped Fe8 cores: approaching reasonable exchange energies

被引：18
作者：
Botezat, Olga [1 ,2 ]
van Leusen, Jan [2 ]
Kravtsov, Victor Ch. [1 ]
Ellern, Arkady [3 ]
Koegerler, Paul [2 ]
Baca, Svetlana G. [1 ]
机构：
[1] Moldavian Acad Sci, Inst Appl Phys, MD-2028 Kishinev, Moldova
[2] Rhein Westfal TH Aachen, Inst Inorgan Chem, D-52074 Aachen, Germany
[3] Iowa State Univ, Dept Chem, Ames, IA 50011 USA
来源：
DALTON TRANSACTIONS | 2015年 / 44卷 / 47期
基金：
瑞士国家科学基金会;
关键词：
MAGNETIC-PROPERTIES; TRIETHANOLAMINE CLUSTERS; HIGH-NUCLEARITY; COMPLEXES; LIGANDS; SPIN; STATE;
D O I：
10.1039/c5dt03024b
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
A series of new octanuclear propeller-like aminoalcohol-supported Fe(III) oxocarboxylate coordination clusters, [Fe8O3(O2CCHMe2)(9)(tea)(teaH)(3)]center dot MeCN center dot 2(H2O) (1), [Fe8O3(O2CCHMe2)(6)(N-3)(3)(tea)(teaH)(3)] (2), [Fe8O3(O2CCMe3)(6)(N)(3)(tea)(teaH)(3)]center dot 0.5(EtOH) (3), and [Fe8O3(O2CCHMe2)(6)(N-3)(3)(mdea)(3)(MeO)(3)] (4) (where teaH(3) = triethanolamine; mdeaH(2) = N-methyldiethanolamine) has been isolated and magnetochemically analyzed combining the programs wxJFinder and CONDON in an approach to avoid overparameterization issues that are common to larger spin polytopes. Dominant antiferromagnetic exchange interactions exist in all clusters along the edges of the propellers, while moderate ferromagnetic interactions are found along the propeller axes in their {Fe8O3} metallic cores.
引用
收藏
页码：20753 / 20762
页数：10
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