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Synthesis, Crystal Structures, and Magnetic Properties of Mixed-Valent Tetranuclear Complexes with Y-Shaped MnII2MnIII2 Core

1
Department of Applied Chemistry for Environment and Reserach Center for Coordination Molecule-Based Devices, School of Science and Technology, Kwansei Gakuin University, 2-1 Gakuen, Sanda 669-1337, Japan
2
Department of Science, Faculty of Science, Yamagata University, 1-4-12 Kojirakawa, Yamagata 990-8560, Japan
*
Author to whom correspondence should be addressed.
Magnetochemistry 2019, 5(1), 8; https://doi.org/10.3390/magnetochemistry5010008
Received: 31 December 2018 / Revised: 23 January 2019 / Accepted: 24 January 2019 / Published: 28 January 2019
(This article belongs to the Special Issue Coordination Compounds for Coordination Molecule-Based Devices)
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Abstract

Tetranuclear MnII2MnIII2 complexes with 1,3-bis(5-bromo-3-metoxysalicylidenaminomethyl)-2-propanol (H3bmsap) and 1,3-bis(5-chloro-3-methoxysalicylidenaminomethyl)-2-propanol (H3cmsap), [Mn4(bmsap)2(CH3CO2)3(CH3O)] (3) and [Mn4(cmsap)2(CH3CO2)3(CH3O)] (4), were synthesized and characterized by elemental analysis, infrared and diffused reflectance spectra and variable-temperature magnetic susceptibility measurements in the 2–300 K range. The crystal structures of 3 and 4 revealed a Y-shaped tetranuclear manganese cluster formed by the two Schiff-base ligands, three kinds of acetato ligands (bidentate, syn–anti-bridging, and syn–syn-bridging), and µ-methoxido ligand. The magnetic data showed the magnetic interactions among the four manganese atoms are antiferromagnetic as a whole within the tetranuclear cluster. View Full-Text
Keywords: manganese complex; tetranuclear complex; mixed-valent complex; antiferromagnetic interaction; spin coupling manganese complex; tetranuclear complex; mixed-valent complex; antiferromagnetic interaction; spin coupling
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Mikuriya, M.; Kurahashi, S.; Tomohara, S.; Koyama, Y.; Yoshioka, D.; Mitsuhashi, R.; Sakiyama, H. Synthesis, Crystal Structures, and Magnetic Properties of Mixed-Valent Tetranuclear Complexes with Y-Shaped MnII2MnIII2 Core. Magnetochemistry 2019, 5, 8.

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