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Taniai R, Endo T, Kanetomo T, Okazawa A, Kadobayashi H, Kawaguchi SI, Enomoto M. 57Fe Mössbauer spectroscopy and high-pressure structural analysis for the mechanism of pressure-induced unique magnetic behaviour in (cation)[Fe IIFe III(dto) 3] (cation = Ph 4P and nPrPh 3P; dto = 1,2-dithiooxalato). Dalton Trans 2023; 52:8368-8375. [PMID: 37264672 DOI: 10.1039/d3dt00858d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
A mixed-valence iron(II,III) coordination polymer, (Ph4P)[FeIIFeIII(dto)3] (2; Ph4P = tetraphenylphosphonium, dto = 1,2-dithiooxalato), exhibits a thermal hysteresis loop and a low temperature shift of the ferromagnetic phase transition temperature, with increasing pressure. The latter magnetic behaviour can also be observed in a novel compound (nPrPh3P)[FeIIFeIII(dto)3] (3; nPrPh3P = n-propyltriphenylphosphonium). To understand the structural information under pressure, we performed high-pressure powder X-ray diffraction, and the result suggests that there was no structural phase transition for either compound. Considering the 57Fe Mössbauer spectroscopy studies, both 2 and 3 may have a high transition entropy, and this finding is caused by pressure-induced unique magnetic behaviours.
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Affiliation(s)
- Ryosuke Taniai
- Tokyo University of Science, 1-3 Kagurazaka, Shinjuku-ku, Tokyo 162-8601, Japan.
| | - Tsubasa Endo
- Tokyo University of Science, 1-3 Kagurazaka, Shinjuku-ku, Tokyo 162-8601, Japan.
| | - Takuya Kanetomo
- Tokyo University of Science, 1-3 Kagurazaka, Shinjuku-ku, Tokyo 162-8601, Japan.
| | - Atsushi Okazawa
- Waseda University, 3-4-1 Okubo, Shinjuku-ku, Tokyo 169-8555, Japan
| | - Hirokazu Kadobayashi
- Japan Synchrotron Radiation Research Institute (JASRI), SPring-8, Sayo, Hyogo 679-5198, Japan
| | - Saori I Kawaguchi
- Japan Synchrotron Radiation Research Institute (JASRI), SPring-8, Sayo, Hyogo 679-5198, Japan
| | - Masaya Enomoto
- Tokyo University of Science, 1-3 Kagurazaka, Shinjuku-ku, Tokyo 162-8601, Japan.
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Kojima N, Enomoto M, Kida N, Kagesawa K. Progress of Multi Functional Properties of Organic-Inorganic Hybrid System, A[FeIIFeIIIX3] (A = (n-CnH2n+1)4N, Spiropyran; X = C2O2S2, C2OS3, C2O3S). MATERIALS 2010. [PMCID: PMC5445911 DOI: 10.3390/ma3053141] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
In the case of mixed-valence systems whose spin states are situated in the spin crossover region, new types of conjugated phenomena coupled with spin and charge are expected. From this viewpoint, we have investigated the multifunctional properties coupled with spin, charge and photon for the organic-inorganic hybrid system, A[FeIIFeIIIX3](A = (n-CnH2n+1)4N, spiropyran; X = dto(C2O2S2), tto(C2OS3), mto(C2O3S)). A[FeIIFeIII(dto)3] and A[FeIIFeIII(tto)3] undergo the ferromagnetic phase transitions, while A[FeIIFeIII(mto)3] undergoes a ferrimagnetic transition. In (n-CnH2n+1)4N [FeIIFeIII(dto)3](n = 3,4), a new type of phase transition called charge transfer phase transition (CTPT) takes place around 120 K, where the thermally induced charge transfer between FeII and FeIII occurs reversibly. At the CTPT, the iron valence state dynamically fluctuated with a frequency of about 0.1 MHz, which was confirmed by means of muon spin relaxation. The charge transfer phase transition and the ferromagnetic transition for (n-CnH2n+1)4N[FeIIFeIII(dto)3] remarkably depend on the size of intercalated cation. In the case of (SP)[FeIIFeIII(dto)3](SP = spiropyran), the photoinduced isomerization of SP under UV irradiation induces the charge transfer phase transition in the [FeIIFeIII(dto)3] layer and the remarkable change of the ferromagnetic transition temperature. In the case of (n-CnH2n+1)4N[FeIIFeIII(mto)3](mto = C2O3S), a rapid spin equilibrium between the high-spin state (S = 5/2) and the low-spin state (S = 1/2) at the FeIIIO3S3 site takes place in a wide temperature range, which induces the valence fluctuation of the FeS3O3 and FeO6 sites through the ferromagnetic coupling between the low spin state (S = 1/2) of the FeIIIS3O3 site and the high spin state (S = 2) of the FeIIO6 site.
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Affiliation(s)
- Norimichi Kojima
- Author to whom correspondence should be addressed; E-Mail: ; Tel.: +81-3-5454-6741; Fax: +81-3-5454-6741
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Kida N, Hikita M, Kashima I, Okubo M, Itoi M, Enomoto M, Kato K, Takata M, Kojima N. Control of Charge Transfer Phase Transition and Ferromagnetism by Photoisomerization of Spiropyran for an Organic−Inorganic Hybrid System, (SP)[FeIIFeIII(dto)3] (SP = spiropyran, dto = C2O2S2). J Am Chem Soc 2008; 131:212-20. [DOI: 10.1021/ja806879a] [Citation(s) in RCA: 57] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Noriyuki Kida
- Graduate School of Arts and Sciences, The University of Tokyo, Komaba 3-8-1, Meguro, Tokyo 153-8902, Japan, Department of Applied Chemistry, The Chuo University, Kasuga 1-13-27, Bunkyo, Tokyo 112-8551, Japan, Department of Physics and Mathematics, Aoyama University, Fuchinobe 5-10-1, Sagamihara, Kanagawa 229-8558, Japan, and RIKEN SPring-8 Center, Koto 1-1-1, Sayo-Cho, Sayo-gun, Hyogo 679-5148, Japan
| | - Masanori Hikita
- Graduate School of Arts and Sciences, The University of Tokyo, Komaba 3-8-1, Meguro, Tokyo 153-8902, Japan, Department of Applied Chemistry, The Chuo University, Kasuga 1-13-27, Bunkyo, Tokyo 112-8551, Japan, Department of Physics and Mathematics, Aoyama University, Fuchinobe 5-10-1, Sagamihara, Kanagawa 229-8558, Japan, and RIKEN SPring-8 Center, Koto 1-1-1, Sayo-Cho, Sayo-gun, Hyogo 679-5148, Japan
| | - Izuru Kashima
- Graduate School of Arts and Sciences, The University of Tokyo, Komaba 3-8-1, Meguro, Tokyo 153-8902, Japan, Department of Applied Chemistry, The Chuo University, Kasuga 1-13-27, Bunkyo, Tokyo 112-8551, Japan, Department of Physics and Mathematics, Aoyama University, Fuchinobe 5-10-1, Sagamihara, Kanagawa 229-8558, Japan, and RIKEN SPring-8 Center, Koto 1-1-1, Sayo-Cho, Sayo-gun, Hyogo 679-5148, Japan
| | - Masashi Okubo
- Graduate School of Arts and Sciences, The University of Tokyo, Komaba 3-8-1, Meguro, Tokyo 153-8902, Japan, Department of Applied Chemistry, The Chuo University, Kasuga 1-13-27, Bunkyo, Tokyo 112-8551, Japan, Department of Physics and Mathematics, Aoyama University, Fuchinobe 5-10-1, Sagamihara, Kanagawa 229-8558, Japan, and RIKEN SPring-8 Center, Koto 1-1-1, Sayo-Cho, Sayo-gun, Hyogo 679-5148, Japan
| | - Miho Itoi
- Graduate School of Arts and Sciences, The University of Tokyo, Komaba 3-8-1, Meguro, Tokyo 153-8902, Japan, Department of Applied Chemistry, The Chuo University, Kasuga 1-13-27, Bunkyo, Tokyo 112-8551, Japan, Department of Physics and Mathematics, Aoyama University, Fuchinobe 5-10-1, Sagamihara, Kanagawa 229-8558, Japan, and RIKEN SPring-8 Center, Koto 1-1-1, Sayo-Cho, Sayo-gun, Hyogo 679-5148, Japan
| | - Masaya Enomoto
- Graduate School of Arts and Sciences, The University of Tokyo, Komaba 3-8-1, Meguro, Tokyo 153-8902, Japan, Department of Applied Chemistry, The Chuo University, Kasuga 1-13-27, Bunkyo, Tokyo 112-8551, Japan, Department of Physics and Mathematics, Aoyama University, Fuchinobe 5-10-1, Sagamihara, Kanagawa 229-8558, Japan, and RIKEN SPring-8 Center, Koto 1-1-1, Sayo-Cho, Sayo-gun, Hyogo 679-5148, Japan
| | - Kenichi Kato
- Graduate School of Arts and Sciences, The University of Tokyo, Komaba 3-8-1, Meguro, Tokyo 153-8902, Japan, Department of Applied Chemistry, The Chuo University, Kasuga 1-13-27, Bunkyo, Tokyo 112-8551, Japan, Department of Physics and Mathematics, Aoyama University, Fuchinobe 5-10-1, Sagamihara, Kanagawa 229-8558, Japan, and RIKEN SPring-8 Center, Koto 1-1-1, Sayo-Cho, Sayo-gun, Hyogo 679-5148, Japan
| | - Masaki Takata
- Graduate School of Arts and Sciences, The University of Tokyo, Komaba 3-8-1, Meguro, Tokyo 153-8902, Japan, Department of Applied Chemistry, The Chuo University, Kasuga 1-13-27, Bunkyo, Tokyo 112-8551, Japan, Department of Physics and Mathematics, Aoyama University, Fuchinobe 5-10-1, Sagamihara, Kanagawa 229-8558, Japan, and RIKEN SPring-8 Center, Koto 1-1-1, Sayo-Cho, Sayo-gun, Hyogo 679-5148, Japan
| | - Norimichi Kojima
- Graduate School of Arts and Sciences, The University of Tokyo, Komaba 3-8-1, Meguro, Tokyo 153-8902, Japan, Department of Applied Chemistry, The Chuo University, Kasuga 1-13-27, Bunkyo, Tokyo 112-8551, Japan, Department of Physics and Mathematics, Aoyama University, Fuchinobe 5-10-1, Sagamihara, Kanagawa 229-8558, Japan, and RIKEN SPring-8 Center, Koto 1-1-1, Sayo-Cho, Sayo-gun, Hyogo 679-5148, Japan
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