Synthesis, structure and magnetic properties of pyrazolate-bridged dinuclear complexes [{M(NCS)(4-Phpy)}2(μ-bpypz)2] (M = Co2+ and Fe2+)

Ko Yoneda, Keisaku Nakano, Junji Fujioka, Koichi Yamada, Takayoshi Suzuki, Akira Fuyuhiro, Satoshi Kawata, Sumio Kaizaki

Research output: Contribution to journalArticle

20 Citations (Scopus)

Abstract

The synthesis and magnetic characterization of pyrazolato-bridged dinuclear complexes [{M(NCS)(4-Phpy)}2(μ-bpypz)2] (Hbpypz = 3,5-bis(2-pyridyl)-pyrazole; 4-Phpy = 4-phenylpyridine; M = Co2+ (1) and Fe2+ (2)) are described together with the X-ray crystal analysis of the cobalt complex. The structure of 1 shows that the desired coordination has been achieved with the cobalt atoms being coordinated to two bpypz to form the dimer. The X-ray diffraction patterns show 1 and 2 to be isomorphous at room temperature. 2 displays a single spin-crossover transition between the [HS-HS] and [LS-LS] states with Tc = 150 K.

Original languageEnglish
Pages (from-to)2437-2442
Number of pages6
JournalPolyhedron
Volume24
Issue number16-17
DOIs
Publication statusPublished - Nov 17 2005
Externally publishedYes

Fingerprint

Cobalt
Magnetic properties
cobalt
magnetic properties
synthesis
X-Ray Diffraction
Dimers
Diffraction patterns
crossovers
x rays
diffraction patterns
Display devices
dimers
X-Rays
X ray diffraction
X rays
Atoms
Crystals
Temperature
room temperature

Keywords

  • 3,5-Bis(2-pyridyl)-pyrazole
  • 4-Phenylpyridine
  • Dinuclear complex
  • Spin-crossover

ASJC Scopus subject areas

  • Biochemistry
  • Inorganic Chemistry
  • Physical and Theoretical Chemistry
  • Materials Chemistry

Cite this

Synthesis, structure and magnetic properties of pyrazolate-bridged dinuclear complexes [{M(NCS)(4-Phpy)}2(μ-bpypz)2] (M = Co2+ and Fe2+). / Yoneda, Ko; Nakano, Keisaku; Fujioka, Junji; Yamada, Koichi; Suzuki, Takayoshi; Fuyuhiro, Akira; Kawata, Satoshi; Kaizaki, Sumio.

In: Polyhedron, Vol. 24, No. 16-17, 17.11.2005, p. 2437-2442.

Research output: Contribution to journalArticle

Yoneda, Ko ; Nakano, Keisaku ; Fujioka, Junji ; Yamada, Koichi ; Suzuki, Takayoshi ; Fuyuhiro, Akira ; Kawata, Satoshi ; Kaizaki, Sumio. / Synthesis, structure and magnetic properties of pyrazolate-bridged dinuclear complexes [{M(NCS)(4-Phpy)}2(μ-bpypz)2] (M = Co2+ and Fe2+). In: Polyhedron. 2005 ; Vol. 24, No. 16-17. pp. 2437-2442.
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abstract = "The synthesis and magnetic characterization of pyrazolato-bridged dinuclear complexes [{M(NCS)(4-Phpy)}2(μ-bpypz)2] (Hbpypz = 3,5-bis(2-pyridyl)-pyrazole; 4-Phpy = 4-phenylpyridine; M = Co2+ (1) and Fe2+ (2)) are described together with the X-ray crystal analysis of the cobalt complex. The structure of 1 shows that the desired coordination has been achieved with the cobalt atoms being coordinated to two bpypz to form the dimer. The X-ray diffraction patterns show 1 and 2 to be isomorphous at room temperature. 2 displays a single spin-crossover transition between the [HS-HS] and [LS-LS] states with Tc = 150 K.",
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T1 - Synthesis, structure and magnetic properties of pyrazolate-bridged dinuclear complexes [{M(NCS)(4-Phpy)}2(μ-bpypz)2] (M = Co2+ and Fe2+)

AU - Yoneda, Ko

AU - Nakano, Keisaku

AU - Fujioka, Junji

AU - Yamada, Koichi

AU - Suzuki, Takayoshi

AU - Fuyuhiro, Akira

AU - Kawata, Satoshi

AU - Kaizaki, Sumio

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AB - The synthesis and magnetic characterization of pyrazolato-bridged dinuclear complexes [{M(NCS)(4-Phpy)}2(μ-bpypz)2] (Hbpypz = 3,5-bis(2-pyridyl)-pyrazole; 4-Phpy = 4-phenylpyridine; M = Co2+ (1) and Fe2+ (2)) are described together with the X-ray crystal analysis of the cobalt complex. The structure of 1 shows that the desired coordination has been achieved with the cobalt atoms being coordinated to two bpypz to form the dimer. The X-ray diffraction patterns show 1 and 2 to be isomorphous at room temperature. 2 displays a single spin-crossover transition between the [HS-HS] and [LS-LS] states with Tc = 150 K.

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