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Issue 6, 2015
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Syntheses, structures and magnetism of mixed-valence Mn19 and Mn21 complexes supported by alkylamine-based alkoxo-bridging ligands

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Abstract

Two new high-nuclearity mixed-valence Mn clusters, Mn19 and Mn21, were synthesised utilising an alkylamine-based flexible ligand with five alkoxo-bridging groups, 1,3-bis-diethanolamino-2-propanol (H5bdp). They were obtained from the reaction of Mn(O2CPh)2·2H2O with H5bdp·2HCl·H2O and Et3N in a 4 : 1 : 7 molar ratio in CH3CN/CH3OH mixed solution. The X-ray crystal structures revealed {MnII8MnIII10MnIV} and {MnII6MnIII15} mixed-valence cores composed around {Mn7O8} corner-shared double cubanes. Magnetic susceptibility measurements on both complexes indicated dominant intramolecular antiferromagnetic interactions between Mn ions. No clear SMM behaviour was observed above 1.8 K due to the non-parallel alignment of magnetic anisotropy axes of the MnIII ions.

Graphical abstract: Syntheses, structures and magnetism of mixed-valence Mn19 and Mn21 complexes supported by alkylamine-based alkoxo-bridging ligands

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Supplementary files

Article information


Submitted
26 Jan 2015
Accepted
07 Apr 2015
First published
08 Apr 2015

Inorg. Chem. Front., 2015,2, 538-543
Article type
Research Article
Author version available

Syntheses, structures and magnetism of mixed-valence Mn19 and Mn21 complexes supported by alkylamine-based alkoxo-bridging ligands

H. Ida, T. Shiga, G. N. Newton and H. Oshio, Inorg. Chem. Front., 2015, 2, 538
DOI: 10.1039/C5QI00013K

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