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Tetranuclear Hetro-Metal [MnIII2NiII2] Complexes Involving Defective Double-Cubane Structure: Synthesis, Crystal Structures, and Magnetic Properties

1
Department of Chemistry and Applied Chemistry, Faculty of Science and Engineering, Saga University, Honjo 1, Saga 840-8502, Japan
2
Department of Applied Chemistry for Environment, School of Science and Technology, Kwansei Gakuin University, Gakuen 2-1, Sanda 669-1337, Japan
*
Author to whom correspondence should be addressed.
Magnetochemistry 2019, 5(1), 14; https://doi.org/10.3390/magnetochemistry5010014
Received: 29 December 2018 / Revised: 4 February 2019 / Accepted: 8 February 2019 / Published: 14 February 2019
(This article belongs to the Special Issue Coordination Compounds for Coordination Molecule-Based Devices)
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Abstract

Tetranuclear hetero-metal MnIII2NiII2 complexes, [Mn2Ni2(L)4(OAc)2] (1) and [Mn2Ni2(L)4(NO3)2] (2) [H2L = N-(2-hydroxymethylphenyl)-5,6-benzosalicylideneimine], have been synthesized and characterized by X-ray crystal structure analyses, infrared spectra, and elemental analyses. The structure analyses revealed that the complexes have a defective double-cubane metal core connected by μ3-alkoxo bridges. Complexes consist of two bis-μ-alkoxo bridged MnIIINiII heteronuclear units making a dimer-of-dimers structure. The double-cubane cores are significantly distorted due to an effect of syn–syn mode acetato or nitrato bridges. Magnetic measurements indicate that weak antiferromagnetic interactions (Mn-Ni = −0.66 ~ −4.19 cm–1) are dominant in the hetero-metal core. View Full-Text
Keywords: tetranuclear complex; hetero-metal complex; manganese; nickel; crystal structure; double-cubane; Schiff-base ligand; magnetic property tetranuclear complex; hetero-metal complex; manganese; nickel; crystal structure; double-cubane; Schiff-base ligand; magnetic property
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).

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Suemitsu, Y.; Matsunaga, R.; Toyofuku, T.; Yamada, Y.; Mikuriya, M.; Tokii, T.; Koikawa, M. Tetranuclear Hetro-Metal [MnIII2NiII2] Complexes Involving Defective Double-Cubane Structure: Synthesis, Crystal Structures, and Magnetic Properties. Magnetochemistry 2019, 5, 14.

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