Nanospheric [M<sub>20</sub>(OH)<sub>12</sub>(maleate)<sub>12</sub>(Me<sub>2</sub>NH)<sub>12</sub>]<sup>4+</sup> Clusters (M = Co, Ni) with <i>O</i><sub><i>h</i></sub> Symmetry
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https://figshare.com/articles/dataset/Nanospheric_M_sub_20_sub_OH_sub_12_sub_maleate_sub_12_sub_Me_sub_2_sub_NH_sub_12_sub_sup_4_sup_Clusters_M_Co_Ni_with_i_O_i_sub_i_h_i_sub_Symmetry/2558803
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资源简介：
Nanospheric hydroxo-bridged clusters of [M20(OH)12(maleate)12(Me2NH)12](BF4)3(OH)·nH2O (M
= Co (1), Ni (2)) with Oh symmetry were afforded under hydrothermal
condition with Co(BF4)2·6H2O/Ni(BF4)2·6H2O and fumaric acid in a DMF/EtOH
mixed solvent. They are characterized by elemental analysis, IR, and
X-ray diffraction. X-ray single crystal diffraction analyses show
that these two complexes are isostructural containing an ideally cubic
M8 core in that each two M atoms are doubly bridged at
the edges by one OH– and one maleate, while these
OH– and maleate groups are coordinated further by
exterior identical 12 M atoms which construct a perfect M12 icosahedron to encapsulate the cubic core. To our knowledge, such
large clusters with Oh symmetry are seldom. The variable-temperature magnetic susceptibility
studies reveal that these two isostructures exhibit antiferromagnetic
interactions.
创建时间：
2016-02-22
