57Fe Mossbauer spectroscopic and magnetic study of a spin-crossover polymer complex, Fe(3-chloropyridine)2Ni(CN)4

T. Kitazawa; M. Takahashi; M. Takahashi; M. Enomoto; A. Miyazaki; T. Enoki; M. Takeda

doi:10.1007/BF02349498

⁵⁷Fe Mossbauer spectroscopic and magnetic study of a spin-crossover polymer complex, Fe(3-chloropyridine)₂Ni(CN)₄

T. Kitazawa^*, M. Takahashi, M. Takahashi, M. Enomoto, A. Miyazaki, T. Enoki, M. Takeda

^*Corresponding author for this work

Applied Chemistry

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

31 Scopus citations

Abstract

The coordination polymer Fe(3-chloropyridine)₂Ni(CN)₄ (2) has been prepared by a method similar to that for Fe(pyridine)₂Ni(CN)₄ (1). The complex (2) has been characterized by ⁵⁷Fe Mossbauer spectroscopy and a SQUID technique. ⁵⁷Fe Mossbauer and magnetic susceptibility data show that complex (2) exhibits spin-crossover behavior. The spin transition of (2) occurs between 120 and 80 K with very small hysteresis or without hysteresis. The temperature range of the spin transition in (2) is lower than that in (1). A residual high spin iron(II) fraction is observed at low temperatures in (2), being different from (1). SQUID data also show that samples treated differently yield different spin transition curves.

Original language	English
Pages (from-to)	285-290
Number of pages	6
Journal	Journal of Radioanalytical and Nuclear Chemistry
Volume	239
Issue number	2
DOIs	https://doi.org/10.1007/BF02349498
State	Published - 1999

ASJC Scopus subject areas

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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10.1007/BF02349498

Cite this

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title = "57Fe Mossbauer spectroscopic and magnetic study of a spin-crossover polymer complex, Fe(3-chloropyridine)2Ni(CN)4",

abstract = "The coordination polymer Fe(3-chloropyridine)2Ni(CN)4 (2) has been prepared by a method similar to that for Fe(pyridine)2Ni(CN)4 (1). The complex (2) has been characterized by 57Fe Mossbauer spectroscopy and a SQUID technique. 57Fe Mossbauer and magnetic susceptibility data show that complex (2) exhibits spin-crossover behavior. The spin transition of (2) occurs between 120 and 80 K with very small hysteresis or without hysteresis. The temperature range of the spin transition in (2) is lower than that in (1). A residual high spin iron(II) fraction is observed at low temperatures in (2), being different from (1). SQUID data also show that samples treated differently yield different spin transition curves.",

author = "T. Kitazawa and M. Takahashi and M. Takahashi and M. Enomoto and A. Miyazaki and T. Enoki and M. Takeda",

year = "1999",

doi = "10.1007/BF02349498",

language = "英語",

volume = "239",

pages = "285--290",

journal = "Journal of Radioanalytical and Nuclear Chemistry",

issn = "0236-5731",

publisher = "Akademiai Kiado ZRt.",

number = "2",

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TY - JOUR

T1 - 57Fe Mossbauer spectroscopic and magnetic study of a spin-crossover polymer complex, Fe(3-chloropyridine)2Ni(CN)4

AU - Kitazawa, T.

AU - Takahashi, M.

AU - Enomoto, M.

AU - Miyazaki, A.

AU - Enoki, T.

AU - Takeda, M.

PY - 1999

Y1 - 1999

N2 - The coordination polymer Fe(3-chloropyridine)2Ni(CN)4 (2) has been prepared by a method similar to that for Fe(pyridine)2Ni(CN)4 (1). The complex (2) has been characterized by 57Fe Mossbauer spectroscopy and a SQUID technique. 57Fe Mossbauer and magnetic susceptibility data show that complex (2) exhibits spin-crossover behavior. The spin transition of (2) occurs between 120 and 80 K with very small hysteresis or without hysteresis. The temperature range of the spin transition in (2) is lower than that in (1). A residual high spin iron(II) fraction is observed at low temperatures in (2), being different from (1). SQUID data also show that samples treated differently yield different spin transition curves.

AB - The coordination polymer Fe(3-chloropyridine)2Ni(CN)4 (2) has been prepared by a method similar to that for Fe(pyridine)2Ni(CN)4 (1). The complex (2) has been characterized by 57Fe Mossbauer spectroscopy and a SQUID technique. 57Fe Mossbauer and magnetic susceptibility data show that complex (2) exhibits spin-crossover behavior. The spin transition of (2) occurs between 120 and 80 K with very small hysteresis or without hysteresis. The temperature range of the spin transition in (2) is lower than that in (1). A residual high spin iron(II) fraction is observed at low temperatures in (2), being different from (1). SQUID data also show that samples treated differently yield different spin transition curves.

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DO - 10.1007/BF02349498

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VL - 239

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