Influence of the intermolecular interaction on photo-induced spin-transition of [Fe(R-pap)2]X

S. Hayami; T. Kawahara; Y. Maeda; K. Inoue; O. Sato

doi:10.1007/s10967-005-0943-y

Influence of the intermolecular interaction on photo-induced spin-transition of [Fe(R-pap)₂]X

S. Hayami, T. Kawahara, Y. Maeda, K. Inoue, O. Sato

Research output: Contribution to journal › Article › peer-review

7 Citations (Scopus)

Abstract

Iron(III) spin-crossover complexes [Fe(pap)₂]ClO ₄·H²O (1), [Fe(pap)₂]BF ₄·H₂O (2), [Fe(pap)₂]PF ₆·CH₃OH (3), [Fe(CH₃-pap) ₂]ClO₄·H₂O (4), [Fe_0.5Al _0.5(pap)₂]ClO₄·CH₃OH (5) and [Fe_0.25Al_0.75(pap)₂] ClO₄· CH₃OH (6) were prepared and the spin transition behaviors of the complexes have been studied from magnetic susceptibility and Mössbauer spectroscopy measurements. The magnetic properties of light-induced metastable state are measured using Hg-Xe light source. T_1/2 is temperature at which the populations of the high-spin and low-spin species are fifty-fifty. Metastable HS is produced by light irradiation at 5 K. T(LIESST) is the temperature at which the populations of the metastable high-spin species decrease to one half and cooperativity factor C is defined as the parameter which presents the strength of cooperativity. The value of T(LIESST) decreases as T_1/2 increases and the plots of T(LIESST) vs. C show linear correlation. The effect of cooperativity of the complexes on the relaxations in solid was confirmed for the iron(III) complexes.

Original language	English
Pages (from-to)	521-525
Number of pages	5
Journal	Journal of Radioanalytical and Nuclear Chemistry
Volume	266
Issue number	3
DOIs	https://doi.org/10.1007/s10967-005-0943-y
Publication status	Published - Nov 2005
Externally published	Yes

All Science Journal Classification (ASJC) codes

Analytical Chemistry
Nuclear Energy and Engineering
Radiology Nuclear Medicine and imaging
Pollution
Spectroscopy
Public Health, Environmental and Occupational Health
Health, Toxicology and Mutagenesis

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This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1007/s10967-005-0943-y

Cite this

@article{3f387903e2fe4668b6bba8646ec093ef,

title = "Influence of the intermolecular interaction on photo-induced spin-transition of [Fe(R-pap)2]X",

abstract = "Iron(III) spin-crossover complexes [Fe(pap)2]ClO 4·H2O (1), [Fe(pap)2]BF 4·H2O (2), [Fe(pap)2]PF 6·CH3OH (3), [Fe(CH3-pap) 2]ClO4·H2O (4), [Fe0.5Al 0.5(pap)2]ClO4·CH3OH (5) and [Fe0.25Al0.75(pap)2] ClO4· CH3OH (6) were prepared and the spin transition behaviors of the complexes have been studied from magnetic susceptibility and M{\"o}ssbauer spectroscopy measurements. The magnetic properties of light-induced metastable state are measured using Hg-Xe light source. T1/2 is temperature at which the populations of the high-spin and low-spin species are fifty-fifty. Metastable HS is produced by light irradiation at 5 K. T(LIESST) is the temperature at which the populations of the metastable high-spin species decrease to one half and cooperativity factor C is defined as the parameter which presents the strength of cooperativity. The value of T(LIESST) decreases as T1/2 increases and the plots of T(LIESST) vs. C show linear correlation. The effect of cooperativity of the complexes on the relaxations in solid was confirmed for the iron(III) complexes.",

author = "S. Hayami and T. Kawahara and Y. Maeda and K. Inoue and O. Sato",

note = "Funding Information: This work was supported by a Grant-in-Aid for Science Research No.13440197 from the Ministry of Education, Science and Culture, which is greatly acknowledged.",

year = "2005",

month = nov,

doi = "10.1007/s10967-005-0943-y",

language = "English",

volume = "266",

pages = "521--525",

journal = "Journal of Radioanalytical and Nuclear Chemistry",

issn = "0236-5731",

publisher = "Springer Netherlands",

number = "3",

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TY - JOUR

T1 - Influence of the intermolecular interaction on photo-induced spin-transition of [Fe(R-pap)2]X

AU - Hayami, S.

AU - Kawahara, T.

AU - Maeda, Y.

AU - Inoue, K.

AU - Sato, O.

N1 - Funding Information: This work was supported by a Grant-in-Aid for Science Research No.13440197 from the Ministry of Education, Science and Culture, which is greatly acknowledged.

PY - 2005/11

Y1 - 2005/11

N2 - Iron(III) spin-crossover complexes [Fe(pap)2]ClO 4·H2O (1), [Fe(pap)2]BF 4·H2O (2), [Fe(pap)2]PF 6·CH3OH (3), [Fe(CH3-pap) 2]ClO4·H2O (4), [Fe0.5Al 0.5(pap)2]ClO4·CH3OH (5) and [Fe0.25Al0.75(pap)2] ClO4· CH3OH (6) were prepared and the spin transition behaviors of the complexes have been studied from magnetic susceptibility and Mössbauer spectroscopy measurements. The magnetic properties of light-induced metastable state are measured using Hg-Xe light source. T1/2 is temperature at which the populations of the high-spin and low-spin species are fifty-fifty. Metastable HS is produced by light irradiation at 5 K. T(LIESST) is the temperature at which the populations of the metastable high-spin species decrease to one half and cooperativity factor C is defined as the parameter which presents the strength of cooperativity. The value of T(LIESST) decreases as T1/2 increases and the plots of T(LIESST) vs. C show linear correlation. The effect of cooperativity of the complexes on the relaxations in solid was confirmed for the iron(III) complexes.

AB - Iron(III) spin-crossover complexes [Fe(pap)2]ClO 4·H2O (1), [Fe(pap)2]BF 4·H2O (2), [Fe(pap)2]PF 6·CH3OH (3), [Fe(CH3-pap) 2]ClO4·H2O (4), [Fe0.5Al 0.5(pap)2]ClO4·CH3OH (5) and [Fe0.25Al0.75(pap)2] ClO4· CH3OH (6) were prepared and the spin transition behaviors of the complexes have been studied from magnetic susceptibility and Mössbauer spectroscopy measurements. The magnetic properties of light-induced metastable state are measured using Hg-Xe light source. T1/2 is temperature at which the populations of the high-spin and low-spin species are fifty-fifty. Metastable HS is produced by light irradiation at 5 K. T(LIESST) is the temperature at which the populations of the metastable high-spin species decrease to one half and cooperativity factor C is defined as the parameter which presents the strength of cooperativity. The value of T(LIESST) decreases as T1/2 increases and the plots of T(LIESST) vs. C show linear correlation. The effect of cooperativity of the complexes on the relaxations in solid was confirmed for the iron(III) complexes.

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