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Crystals 2014, 4(2), 104-112; doi:10.3390/cryst4020104

Structures and Magnetic Properties of Iron(III) Complexes with Long Alkyl Chains

1 Department of Chemistry, Graduate School of Science and Technology, Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto 860-8555, Japan 2 Department of Chemistry, College of Natural Science, Federal University of Agriculture, Abeokuta, PMB 2240, Nigeria 3 School of Chemistry, The University of Sydney, NSW 2006, Australia 4 Japan Science and Technology, Core Research for Evolutional Science and Technology (JST, CREST), 7 Gobancho, Chiyoda-ku, Tokyo 102-0075, Japan 5 Institute of Pulsed Power Science (IPPS), Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto 860-8555, Japan
* Author to whom correspondence should be addressed.
Received: 26 February 2014 / Revised: 3 April 2014 / Accepted: 7 May 2014 / Published: 15 May 2014
(This article belongs to the Special Issue Crystal Engineering Involving Weak Bonds)
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Iron(III) compounds with long alkyl chains, [Fe(Cn-pap)2]ClO4 (Cn-pap: alkoxy-2-(2-pyridylmethyleneamino)phenol, n = 8 (1), 10 (2), 12 (3), 14 (4), 16 (5)) have been synthesized. The compounds were characterized by single crystal X-ray structure analysis and temperature dependent magnetic susceptibility in order to research the relationship between magnetic properties and the presence of long alkyl chains in soft molecules of the present type. The compounds 1, 2, 3 and 4 are in the high-spin (HS) state over the temperature range of 5 to 400 K. On the other hand, compound 5 is low-spin (LS) showing that the difference in magnetic properties depends on the length of the alkyl chain in the respective compounds.
Keywords: iron(III); soft material; spin crossover iron(III); soft material; spin crossover
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.

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Nakaya, M.; Shimayama, K.; Takami, K.; Hirata, K.; Amolegbe, S.A.; Nakamura, M.; Lindoy, L.F.; Hayami, S. Structures and Magnetic Properties of Iron(III) Complexes with Long Alkyl Chains. Crystals 2014, 4, 104-112.

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