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Your search keyword '"Takahisa Ikeue"' showing total 5 results
Start Over Author "Takahisa Ikeue" Journal chemical communications
5 results on '"Takahisa Ikeue"'

1. Effects of a nonplanar porphyrin rings on the spin–spin interactions in low-spin ferric porphyrin radical cationsElectronic supplementary information (ESI) available: 1H NMR spectra of low-spin radical cations. See http://www.rsc.org/suppdata/cc/b2/b210229c

Author

Mikio Nakamura, Takahisa Ikeue, and Yoshiki Ohgo

Subjects
Chemistry, Metals and Alloys, General Chemistry, Photochemistry, Porphyrin, Catalysis, Antiferromagnetic coupling, Surfaces, Coatings and Films, Electronic, Optical and Magnetic Materials, chemistry.chemical_compound, Atomic orbital, Materials Chemistry, Ceramics and Composites, medicine, Ferric, Spin (physics), medicine.drug
Abstract

Low-spin ferric porphyrin radical cations formed by the oxidation of chloro(meso-tetraalkylporphyrinato)iron(III) followed by the addition of bulky 2-methylimidazole show antiferromagnetic coupling, which is interpreted in terms of the interaction between porphyrin a2u and iron dxy orbitals caused by the S4 ruffling of the porphyrin core.

Published
2002
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2. Highly saddle shaped (porphyrinato)iron(iii) iodide with a pure intermediate spin state

Author

Masashi Takahashi, Masuo Takeda, Yoshiki Ohgo, Takahisa Ikeue, and Mikio Nakamura

Subjects
chemistry.chemical_classification, Squid, Spin states, biology, Ligand, Iodide, Metals and Alloys, General Chemistry, Saddle-shaped, Photochemistry, Catalysis, Surfaces, Coatings and Films, Electronic, Optical and Magnetic Materials, law.invention, Crystallography, chemistry, law, biology.animal, Mössbauer spectroscopy, Materials Chemistry, Ceramics and Composites, Electron paramagnetic resonance
Abstract

Combined analyses using NMR, EPR and Mössbauer spectroscopy as well as SQUID magnetometry have revealed that highly saddle shaped Fe(OETPP)I adopts an essentially pure intermediate spin state in spite of the coordination of an iodide ligand.

Published
2002
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3. Formation of pure intermediate spin complexes in highly nonplanar iron(iii) porphyrins

Author

Yoshiki Ohgo, Tatsuya Yamaguchi, Masashi Takahashi, Masuo Takeda, Takahisa Ikeue, Mikio Nakamura, and Takashi Saitoh

Subjects
Stereochemistry, Chemistry, Metals and Alloys, General Chemistry, Porphyrin, Catalysis, Surfaces, Coatings and Films, Electronic, Optical and Magnetic Materials, law.invention, Crystallography, chemistry.chemical_compound, law, Mössbauer spectroscopy, Materials Chemistry, Ceramics and Composites, Spin (physics), Electron paramagnetic resonance
Abstract

Bis(thf)(porphyrinato)iron(III) complexes with highly S4-ruffled and S4-saddled porphyrin cores are determined to be very pure intermediate spin complexes on the basis of NMR, EPR, Mossbauer, and magnetic data.

Published
2000
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4. Chemical shift of meso-carbon: a powerful probe to determine the coordination structure and electron configuration of ferric porphyrin complexesElectronic supplementary information (ESI) available:chemical shifts, 1H NMR spectra, Curie plots and EPR spectra of 1 and 2. See http://www.rsc.org/suppdata/cc/b3/b303785a

Author

Akira Ikezaki, Akito Hoshino, Takahisa Ikeue, and Mikio Nakamura

Subjects
Chemistry, Chemical shift, Metals and Alloys, chemistry.chemical_element, General Chemistry, Photochemistry, Porphyrin, Catalysis, Surfaces, Coatings and Films, Electronic, Optical and Magnetic Materials, chemistry.chemical_compound, Materials Chemistry, Ceramics and Composites, medicine, Ferric, Electron configuration, Carbon, medicine.drug
Abstract

The meso-13C chemical shifts have been revealed to serve a powerful probe to determine the coordination structure and electron configuration of ferric porphyrin complexes.

Published
2003
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