Study of intermolecular interaction for the spin-crossover iron(II) compounds

Shinya Hayami, Ryo Kawajiri, Gergely Juhász, Takayoshi Kawahara, Koichiro Hashiguchi, Osamu Sato, Katsuya Inoue, Yonezo Maeda

研究成果: ジャーナルへの寄稿記事

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The thermal spin transitions of iron(II) spin-crossover compounds [Fe(PM-iPA)2(NCS)2] (1) and [Fe(PM-iPA)2(NCSe)2] (2) (PM-iPA = N-(2′-pyridylmethyl)-isopropylamine) have occurred at T1/2 = 267 K and 376 K without thermal hysteresis. No light-induced excited spin state trapping (LIESST) effect was observed for compounds 1 and 2 even at 5 K. The iron(lI) spin-crossover compounds [Fe(PM-L)2(NCX)2] (PM-A = N-(2′-pyridylmethyl)-aniline, PM-BiA = N-(2′-pyridylmethyl)-4-aminobiphenyl, PM-TeA = N-(2′-pyridylmethyl)-4-aminoterphenyl, PM-PEA = N-(2′-pyridylmethyl))-4-(phenylethynyl)aniline, and PM-AzA = N-(2′-pyridylmethyl)-4-(phenylazo)aniline; X = S and Se) with ligands having π-systems have exhibited the LIESST effect, and the critical LIESST temperature, Tc(LIESST), has been observed. The compounds 1 and 2 are crystallized at Pnna and C2/c at 298 K, respectively, and the space groups of the compounds remained unchanged until 100 K, although the compounds show the spin transition. The molecular packing structure and thermodynamic parameters of the spin transitions calculated from the magnetic susceptibility curves suggest that compounds 1 and 2 have no strong intermolecular interactions between the complexes, while the compounds with π-system ligands form π-π intra- and intermolecular interactions between the ligands. Our conclusion is that the intermolecular interactions play an important role in trapping a light-induced metastatble state.

元の言語英語
ページ(範囲)1207-1213
ページ数7
ジャーナルBulletin of the Chemical Society of Japan
76
発行部数6
DOI
出版物ステータス出版済み - 6 2003

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Iron compounds
Ligands
Iron
Magnetic susceptibility
Hysteresis
Thermodynamics
aniline
4-pyridylmethyl

All Science Journal Classification (ASJC) codes

  • Chemistry(all)

これを引用

Hayami, S., Kawajiri, R., Juhász, G., Kawahara, T., Hashiguchi, K., Sato, O., ... Maeda, Y. (2003). Study of intermolecular interaction for the spin-crossover iron(II) compounds. Bulletin of the Chemical Society of Japan, 76(6), 1207-1213. https://doi.org/10.1246/bcsj.76.1207

Study of intermolecular interaction for the spin-crossover iron(II) compounds. / Hayami, Shinya; Kawajiri, Ryo; Juhász, Gergely; Kawahara, Takayoshi; Hashiguchi, Koichiro; Sato, Osamu; Inoue, Katsuya; Maeda, Yonezo.

:: Bulletin of the Chemical Society of Japan, 巻 76, 番号 6, 06.2003, p. 1207-1213.

研究成果: ジャーナルへの寄稿記事

Hayami, S, Kawajiri, R, Juhász, G, Kawahara, T, Hashiguchi, K, Sato, O, Inoue, K & Maeda, Y 2003, 'Study of intermolecular interaction for the spin-crossover iron(II) compounds', Bulletin of the Chemical Society of Japan, 巻. 76, 番号 6, pp. 1207-1213. https://doi.org/10.1246/bcsj.76.1207
Hayami, Shinya ; Kawajiri, Ryo ; Juhász, Gergely ; Kawahara, Takayoshi ; Hashiguchi, Koichiro ; Sato, Osamu ; Inoue, Katsuya ; Maeda, Yonezo. / Study of intermolecular interaction for the spin-crossover iron(II) compounds. :: Bulletin of the Chemical Society of Japan. 2003 ; 巻 76, 番号 6. pp. 1207-1213.
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title = "Study of intermolecular interaction for the spin-crossover iron(II) compounds",
abstract = "The thermal spin transitions of iron(II) spin-crossover compounds [Fe(PM-iPA)2(NCS)2] (1) and [Fe(PM-iPA)2(NCSe)2] (2) (PM-iPA = N-(2′-pyridylmethyl)-isopropylamine) have occurred at T1/2 = 267 K and 376 K without thermal hysteresis. No light-induced excited spin state trapping (LIESST) effect was observed for compounds 1 and 2 even at 5 K. The iron(lI) spin-crossover compounds [Fe(PM-L)2(NCX)2] (PM-A = N-(2′-pyridylmethyl)-aniline, PM-BiA = N-(2′-pyridylmethyl)-4-aminobiphenyl, PM-TeA = N-(2′-pyridylmethyl)-4-aminoterphenyl, PM-PEA = N-(2′-pyridylmethyl))-4-(phenylethynyl)aniline, and PM-AzA = N-(2′-pyridylmethyl)-4-(phenylazo)aniline; X = S and Se) with ligands having π-systems have exhibited the LIESST effect, and the critical LIESST temperature, Tc(LIESST), has been observed. The compounds 1 and 2 are crystallized at Pnna and C2/c at 298 K, respectively, and the space groups of the compounds remained unchanged until 100 K, although the compounds show the spin transition. The molecular packing structure and thermodynamic parameters of the spin transitions calculated from the magnetic susceptibility curves suggest that compounds 1 and 2 have no strong intermolecular interactions between the complexes, while the compounds with π-system ligands form π-π intra- and intermolecular interactions between the ligands. Our conclusion is that the intermolecular interactions play an important role in trapping a light-induced metastatble state.",
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T1 - Study of intermolecular interaction for the spin-crossover iron(II) compounds

AU - Hayami, Shinya

AU - Kawajiri, Ryo

AU - Juhász, Gergely

AU - Kawahara, Takayoshi

AU - Hashiguchi, Koichiro

AU - Sato, Osamu

AU - Inoue, Katsuya

AU - Maeda, Yonezo

PY - 2003/6

Y1 - 2003/6

N2 - The thermal spin transitions of iron(II) spin-crossover compounds [Fe(PM-iPA)2(NCS)2] (1) and [Fe(PM-iPA)2(NCSe)2] (2) (PM-iPA = N-(2′-pyridylmethyl)-isopropylamine) have occurred at T1/2 = 267 K and 376 K without thermal hysteresis. No light-induced excited spin state trapping (LIESST) effect was observed for compounds 1 and 2 even at 5 K. The iron(lI) spin-crossover compounds [Fe(PM-L)2(NCX)2] (PM-A = N-(2′-pyridylmethyl)-aniline, PM-BiA = N-(2′-pyridylmethyl)-4-aminobiphenyl, PM-TeA = N-(2′-pyridylmethyl)-4-aminoterphenyl, PM-PEA = N-(2′-pyridylmethyl))-4-(phenylethynyl)aniline, and PM-AzA = N-(2′-pyridylmethyl)-4-(phenylazo)aniline; X = S and Se) with ligands having π-systems have exhibited the LIESST effect, and the critical LIESST temperature, Tc(LIESST), has been observed. The compounds 1 and 2 are crystallized at Pnna and C2/c at 298 K, respectively, and the space groups of the compounds remained unchanged until 100 K, although the compounds show the spin transition. The molecular packing structure and thermodynamic parameters of the spin transitions calculated from the magnetic susceptibility curves suggest that compounds 1 and 2 have no strong intermolecular interactions between the complexes, while the compounds with π-system ligands form π-π intra- and intermolecular interactions between the ligands. Our conclusion is that the intermolecular interactions play an important role in trapping a light-induced metastatble state.

AB - The thermal spin transitions of iron(II) spin-crossover compounds [Fe(PM-iPA)2(NCS)2] (1) and [Fe(PM-iPA)2(NCSe)2] (2) (PM-iPA = N-(2′-pyridylmethyl)-isopropylamine) have occurred at T1/2 = 267 K and 376 K without thermal hysteresis. No light-induced excited spin state trapping (LIESST) effect was observed for compounds 1 and 2 even at 5 K. The iron(lI) spin-crossover compounds [Fe(PM-L)2(NCX)2] (PM-A = N-(2′-pyridylmethyl)-aniline, PM-BiA = N-(2′-pyridylmethyl)-4-aminobiphenyl, PM-TeA = N-(2′-pyridylmethyl)-4-aminoterphenyl, PM-PEA = N-(2′-pyridylmethyl))-4-(phenylethynyl)aniline, and PM-AzA = N-(2′-pyridylmethyl)-4-(phenylazo)aniline; X = S and Se) with ligands having π-systems have exhibited the LIESST effect, and the critical LIESST temperature, Tc(LIESST), has been observed. The compounds 1 and 2 are crystallized at Pnna and C2/c at 298 K, respectively, and the space groups of the compounds remained unchanged until 100 K, although the compounds show the spin transition. The molecular packing structure and thermodynamic parameters of the spin transitions calculated from the magnetic susceptibility curves suggest that compounds 1 and 2 have no strong intermolecular interactions between the complexes, while the compounds with π-system ligands form π-π intra- and intermolecular interactions between the ligands. Our conclusion is that the intermolecular interactions play an important role in trapping a light-induced metastatble state.

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