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

doi:10.1016/j.poly.2005.03.047

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 journal › Article › peer-review

23 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 T_c = 150 K.

Original language	English
Pages (from-to)	2437-2442
Number of pages	6
Journal	Polyhedron
Volume	24
Issue number	16-17
DOIs	https://doi.org/10.1016/j.poly.2005.03.047
Publication status	Published - Nov 17 2005
Externally published	Yes

Keywords

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

ASJC Scopus subject areas

Physical and Theoretical Chemistry
Inorganic Chemistry
Materials Chemistry

Access to Document

10.1016/j.poly.2005.03.047

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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 journal › Article › peer-review

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

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.",

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

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

note = "Funding Information: This research was supported by a Grant-in-Aid for Scientific Research (No. 15550050), and by a Grant-in-Aid for Scientific Research on Priority Area (No. 417) from the Ministry of Education, Culture, Sports, Science and Technology, Japan.",

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AU - Yoneda, Ko

AU - Nakano, Keisaku

AU - Fujioka, Junji

AU - Yamada, Koichi

AU - Suzuki, Takayoshi

AU - Fuyuhiro, Akira

AU - Kawata, Satoshi

AU - Kaizaki, Sumio

N1 - Funding Information: This research was supported by a Grant-in-Aid for Scientific Research (No. 15550050), and by a Grant-in-Aid for Scientific Research on Priority Area (No. 417) from the Ministry of Education, Culture, Sports, Science and Technology, Japan.

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Y1 - 2005/11/17

N2 - 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.

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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