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Issue 32, 2015
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A cascade approach to hetero-pentanuclear manganese-oxide clusters in polyoxometalates and their single-molecule magnet properties

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Abstract

Structurally well-defined hetero-pentanuclear manganese-oxide clusters {MMn4} were successfully synthesized in TBA7Hn[MMn4(OH)2(A-α-SiW9O34)2]·2H2O·C2H4Cl2 (IIMMn4, M = Fe(III), Co(II), Ni(II), Cu(II), Ga(III)) by sequential introduction of metal cations into the trivacant lacunary polyoxometalates (POMs). The pentanuclear manganese-oxide cluster {Mn5} showed a small spin ground state and a low energy barrier for magnetization relaxation. In contrast, the magnetic interactions in the hetero-pentanuclear clusters could be controlled by the arrangements of metals, and the clusters showed large magnetic anisotropy and single-molecule magnet behavior. In particular, the cluster {FeMn4} in IIFeMn4 (S = 11/2) showed the slowest relaxation and the highest energy barrier among the previously reported transition metal-containing POMs.

Graphical abstract: A cascade approach to hetero-pentanuclear manganese-oxide clusters in polyoxometalates and their single-molecule magnet properties

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Supplementary files

Article information


Submitted
10 Apr 2015
Accepted
07 May 2015
First published
08 May 2015

Dalton Trans., 2015,44, 14220-14226
Article type
Paper
Author version available

A cascade approach to hetero-pentanuclear manganese-oxide clusters in polyoxometalates and their single-molecule magnet properties

K. Suzuki, R. Sato, T. Minato, M. Shinoe, K. Yamaguchi and N. Mizuno, Dalton Trans., 2015, 44, 14220
DOI: 10.1039/C5DT01363A

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