Journal
CRYSTAL GROWTH & DESIGN
Volume 13, Issue 11, Pages 4673-4677Publisher
AMER CHEMICAL SOC
DOI: 10.1021/cg400390b
Keywords
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Funding
- Core Research for Evolutional Science and Technology (CREST) project of the Japan Science and Technology Agency (JST)
- Japan Society for the Promotion of Science (JSPS)
- Ministry of Education, Culture, Sports, Science and Technology of Japan (MEXT)
- Asahi Glass Foundation
- MEXT
- JSPS
- Grants-in-Aid for Scientific Research [11J06552, 25888005] Funding Source: KAKEN
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A two-dimensional manganese-octacyanonio-bate based magnet, Mn-3(II)[Nb-IV(CN)(8)](2)(4-aminopyridine)(10)(4-aminopyridinium)(2)center dot 12H(2)O, was prepared. This compound shows a spin-flip transition with a critical magnetic field value of ca. 200 Oe, which originates from metamagnetism. In addition, an impedance measurement indicates that this compound is a super-ionic conductor with 4.6 X 10(-4) S cm(-1). The observed super-ionic conductivity is explained by the proton conduction (so-called the Grotthuss mechanism) through the hydrogen-bonding network, i.e., Lewis acidity of the Mn ion accelerates the deprotonation of the ligand water molecules, and then the released proton propagates via ligand water molecules, noncoordinated water molecules, and 4-aminopyridinium cations.
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