Synthesis and magneto-optical properties of a series of bis(β-diketonato) Co(II) complexes with imino nitroxide radical chelate

Terukazu Ishida; Keiichi Adachi; Satoshi Kawata; Takayoshi Suzuki; Akira Fuyuhiro; Sumio Kaizaki

doi:10.1016/j.poly.2006.09.054

Synthesis and magneto-optical properties of a series of bis(β-diketonato) Co(II) complexes with imino nitroxide radical chelate

Terukazu Ishida, Keiichi Adachi, Satoshi Kawata, Takayoshi Suzuki, Akira Fuyuhiro, Sumio Kaizaki

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

7 Citations (Scopus)

Abstract

A series of bis(4,4,4-trifluoro-1-R-1,3-butanedinato) Co(II) complexes with imino nitroxide radical(IM2py), [Co(Rtfc)₂(IM2py)] (R = trifluoromethyl, phenyl, naphthyl, thienyl), was prepared and characterized by the X-ray analysis which demonstrated the stereospecific formation of the trans(CF₃)-isomer with the trans disposition of the CF₃ groups. The significant substituents effect on the UV-Vis spectra and magnetic properties were discussed in consideration of the inversion of the d_π(t_2g) orbital levels leading to the orbital orthogonality or overlap with the SOMOπ^* of IM2py in terms of the AOM parametrizations or spin-paring energy.

Original language	English
Pages (from-to)	2013-2020
Number of pages	8
Journal	Polyhedron
Volume	26
Issue number	9-11
DOIs	https://doi.org/10.1016/j.poly.2006.09.054
Publication status	Published - Jun 15 2007
Externally published	Yes

Keywords

Co(II) complexes
Imino nitroxide radical complexes
Magnetic interaction
Magnetic orbital
UV-Vis spectra

ASJC Scopus subject areas

Physical and Theoretical Chemistry
Inorganic Chemistry
Materials Chemistry

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10.1016/j.poly.2006.09.054

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title = "Synthesis and magneto-optical properties of a series of bis(β-diketonato) Co(II) complexes with imino nitroxide radical chelate",

abstract = "A series of bis(4,4,4-trifluoro-1-R-1,3-butanedinato) Co(II) complexes with imino nitroxide radical(IM2py), [Co(Rtfc)2(IM2py)] (R = trifluoromethyl, phenyl, naphthyl, thienyl), was prepared and characterized by the X-ray analysis which demonstrated the stereospecific formation of the trans(CF3)-isomer with the trans disposition of the CF3 groups. The significant substituents effect on the UV-Vis spectra and magnetic properties were discussed in consideration of the inversion of the dπ(t2g) orbital levels leading to the orbital orthogonality or overlap with the SOMOπ* of IM2py in terms of the AOM parametrizations or spin-paring energy.",

keywords = "Co(II) complexes, Imino nitroxide radical complexes, Magnetic interaction, Magnetic orbital, UV-Vis spectra",

author = "Terukazu Ishida and Keiichi Adachi and Satoshi Kawata and Takayoshi Suzuki and Akira Fuyuhiro and Sumio Kaizaki",

note = "Funding Information: We gratefully acknowledge support of this research by a Grant-in-Aid for Scientific Research (A) (No. 10304056) from the Ministry of Education, Sports, Culture, Science and Technology, Japan. ",

year = "2007",

month = jun,

day = "15",

doi = "10.1016/j.poly.2006.09.054",

language = "English",

volume = "26",

pages = "2013--2020",

journal = "Polyhedron",

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TY - JOUR

T1 - Synthesis and magneto-optical properties of a series of bis(β-diketonato) Co(II) complexes with imino nitroxide radical chelate

AU - Ishida, Terukazu

AU - Adachi, Keiichi

AU - Kawata, Satoshi

AU - Suzuki, Takayoshi

AU - Fuyuhiro, Akira

AU - Kaizaki, Sumio

N1 - Funding Information: We gratefully acknowledge support of this research by a Grant-in-Aid for Scientific Research (A) (No. 10304056) from the Ministry of Education, Sports, Culture, Science and Technology, Japan.

PY - 2007/6/15

Y1 - 2007/6/15

N2 - A series of bis(4,4,4-trifluoro-1-R-1,3-butanedinato) Co(II) complexes with imino nitroxide radical(IM2py), [Co(Rtfc)2(IM2py)] (R = trifluoromethyl, phenyl, naphthyl, thienyl), was prepared and characterized by the X-ray analysis which demonstrated the stereospecific formation of the trans(CF3)-isomer with the trans disposition of the CF3 groups. The significant substituents effect on the UV-Vis spectra and magnetic properties were discussed in consideration of the inversion of the dπ(t2g) orbital levels leading to the orbital orthogonality or overlap with the SOMOπ* of IM2py in terms of the AOM parametrizations or spin-paring energy.

AB - A series of bis(4,4,4-trifluoro-1-R-1,3-butanedinato) Co(II) complexes with imino nitroxide radical(IM2py), [Co(Rtfc)2(IM2py)] (R = trifluoromethyl, phenyl, naphthyl, thienyl), was prepared and characterized by the X-ray analysis which demonstrated the stereospecific formation of the trans(CF3)-isomer with the trans disposition of the CF3 groups. The significant substituents effect on the UV-Vis spectra and magnetic properties were discussed in consideration of the inversion of the dπ(t2g) orbital levels leading to the orbital orthogonality or overlap with the SOMOπ* of IM2py in terms of the AOM parametrizations or spin-paring energy.

KW - Co(II) complexes

KW - Imino nitroxide radical complexes

KW - Magnetic interaction

KW - Magnetic orbital

KW - UV-Vis spectra

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U2 - 10.1016/j.poly.2006.09.054

DO - 10.1016/j.poly.2006.09.054

M3 - Article

AN - SCOPUS:34249717385

VL - 26

SP - 2013

EP - 2020

JO - Polyhedron

JF - Polyhedron

SN - 0277-5387

IS - 9-11

ER -

Synthesis and magneto-optical properties of a series of bis(β-diketonato) Co(II) complexes with imino nitroxide radical chelate

Abstract

Keywords

ASJC Scopus subject areas

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