Výsledky vyhledávání - "Yoshio Sakaguchi"

Straightforward synthesis of five-membered metallacycloallenes: 1-Zirconacyclopenta-2,3-diene compounds derived from 1,3-enynes

Autor: Yoshio Sakaguchi, Noriyuki Suzuki, Taichiro Shimura, Yoshiro Masuyama

Publikováno v: Pure and Applied Chemistry. 83:1781-1788

A five-membered metallacycloallene complex, 1-zirconacyclopenta-2,3-diene, was prepared from low-valent zirconocene and 2,4-bis(trimethylsilyl)but-1-en-3-yne. The complex reacted with carbonyl compounds to afford alkynyl alcohols after hydrolysis via

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::811139a1ea68287a0b59be7538f660a2
https://doi.org/10.1351/pac-con-11-01-14

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Characterization of the E Isomer of Tetrasubstituted [5]Cumulene and Trapping of the Z Isomer as a Zirconocene Complex

Autor: Sohei Fukui, Yoshiro Masuyama, Nozomu Ohara, Hirotaka Nagao, Noriyuki Suzuki, Kosuke Nishimura, Yoshio Sakaguchi, Shinkoh Nanbu

Publikováno v: Organometallics. 30:3544-3548

The E isomer of a [5]cumulene derivative, 2,2,9,9-tetramethyl-3,8-diphenyldeca-3,4,5,6,7-pentaene (1), which was previously believed to be unisolable owing to very fast E/Z isomerization, was isola...

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https://doi.org/10.1021/om2002427

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Magnetic field effects due to the relaxation mechanism observed for the photo-induced electron transfer reaction of zinc(II) tetraphenylporphyrin and 2-methyl-1,4-naphthoquinone

Autor: Yoshio Sakaguchi, Masao Gohdo, Yasutaka Kitahama, Masanobu Wakasa

Publikováno v: Journal of Photochemistry and Photobiology A: Chemistry. 199:130-135

The magnetic field effects (MFEs) on the photo-induced electron transfer (PET) reaction of zinc(II) tetraphenylporphyrin (ZnTPP) with 2-methyl-1,4-naphthoquinone (2MNQ) in a mixed solvent of cyclohexanol and 2-propanol were investigated at 293 K by a

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https://doi.org/10.1016/j.jphotochem.2008.05.006

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Viscosity Dependence of the Kinetic Parameters of the Radical Ion Pair in Homogeneous Solution Determined by Optically Detected X- and Ku-Band Electron Spin Resonance

Autor: Yasutaka Kitahama, Yoshio Sakaguchi

Publikováno v: The Journal of Physical Chemistry A. 112:347-352

We investigated the dynamics of the radical ion pairs formed by photoinduced electron-transfer reaction from zinc tetraphenyl porphyrin to 2-methyl-1,4-naphthoquinone in mixtures of 2-propanol and cyclohexanol. By the irradiation of a resonant X- (9.

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https://doi.org/10.1021/jp076582p

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Magnetic Isotope Effect on Kinetic Parameters and Quantum Beats of Radical Pairs in Micellar Solution Studied by Optically Detected ESR Using Pulsed Microwave

Autor: Yoshio Sakaguchi, Yasutaka Kitahama

Publikováno v: The Journal of Physical Chemistry A. 112:176-182

We investigated the quantum beats, the oscillation between singlet and triplet states of radical pairs induced by the microwave field resonant to one of the component radicals. They were observed as the alternation of the yields of the component radi

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::62d39663881f17e9f5cc39cd9fd241e2
https://doi.org/10.1021/jp076611w

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Magnetic field effects on the reaction of a triplet-born radical pair consisting of two equivalent sulphur-centre radicals under ultrahigh fields of up to 28 T

Autor: Yoshio Sakaguchi, Masanobu Wakasa, Atom Hamasaki, Giyuu Kido, Kiyoshi Nishizawa

Publikováno v: Molecular Physics. 104:1765-1771

A water-cooled pulsed magnet having a room temperature bore of diameter 20 mm was constructed. Magnetic field effects on a triplet sensitization reaction of p-aminophenyl disulfide (APDS) with xanthone (Xn) were studied in a sodium dodecylsulfate (SD

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https://doi.org/10.1080/00268970600566096

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Preparation, Structural Characterization, and Photochemical Reactions of Silyl- and Germylborates

Autor: Mari Kurihara, Yoshio Sakaguchi, Hisaharu Hayashi, Masato Nanjo, Kunio Mochida, Sayaka Nakamura, Kazuhiko Matsudo

Publikováno v: Organometallics. 25:832-838

Silylborates (Li[PhnMe3-nSiBPh3], n = 1−3) and germylborates (Li[PhnMe3-nGeBPh3], n = 1−3; M[Et3GeBPh3], M = Li, Na, K) were prepared by the reaction of the corresponding silyl- and germylalkali me...

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https://doi.org/10.1021/om050733y

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Magnetic field effects and CIDEP due to the d-type triplet mechanism in intra-molecular reactions

Autor: Hisaharu Hayashi, Yoshio Sakaguchi

Publikováno v: Journal of Photochemistry and Photobiology C: Photochemistry Reviews. 6:25-36

In this review, we present an overview of magnetic field effects (MFEs) and chemically induced electron polarization (CIDEP) due to the d-type triplet mechanism (TM) in intra-molecular reactions of photo-excited triplet molecules. Because the conditi

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::bbcc9578a5ffebce16352646cc1f5669
https://doi.org/10.1016/j.jphotochemrev.2005.01.001

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