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pro vyhledávání: '"Hiroyuki Nohira"'
Autor:
Hiroyuki Nohira, Toshiyuki Nohira
Publikováno v:
Journal of Theoretical and Computational Chemistry. 18(2)
The noncrossing rule for potential energy surfaces can be applied only, as originally postulated by von Neumann and Wigner, to slowly occurring changes; it has, however, over many years, been widely used to rationalize fast chemical reactions. Taking
Publikováno v:
Molecular Crystals and Liquid Crystals. 615:89-106
A new series of all-organic liquid-crystalline (LC) chiral radical compounds, trans-1-alkoxyphenyl-4-[(4-(4-alkoxyphenyl)-2,5-dimethylpyrrolidine-1-oxy-2-yl)-benzylideneamino]benzenes (1) with various alkyl chains, containing a chiral nitroxide unit
Autor:
Hiroyuki Nohira, Toshiyuki Nohira
Publikováno v:
Journal of Theoretical and Computational Chemistry. 16(6)
For sigmatropic reactions, such as [1,3] and [1,5] hydrogen shifts, the Cope and Claisen rearrangements, and the Berson–Nelson rearrangement, no correlation diagrams consistent with the classical electronic formulas have been reported. Here, we rep
Autor:
Hiroyuki Nohira, Toshiyuki Nohira
Publikováno v:
Forma.
Publikováno v:
The Journal of Physical Chemistry B. 117:3054-3060
We have designed and synthesized a new chiral paramagnetic liquid crystalline compound with a nitroxide radical moiety showing chiral smectic A (SmA*) and C (SmC*) phases. This compound shows pretransitional layer contraction prior to the SmA*-to-SmC
QUANTIZATION OF CHEMICAL REACTION: THE DYNAMIC CORRELATION DIAGRAM METHOD FREE FROM NONCROSSING RULE
Autor:
Toshiyuki Nohira, Hiroyuki Nohira
Publikováno v:
Journal of Theoretical and Computational Chemistry. 11:379-389
Both Fukui's frontier orbital (FO) theory and Woodward–Hoffmann's orbital symmetry conservation (W–H) theory are based on the molecular orbital theory. However, there are some obvious inconsistencies between the two theories in explaining the ele
Autor:
Satoshi Shimono, Hideo Takezoe, Hiroyuki Nohira, Rui Tamura, Yoshio Aoki, Yoshio Shimbo, Naohiko Ikuma, Jun Yamauchi, Yoshiaki Uchida
Publikováno v:
J. Mater. Chem.. 19:415-418
Here we show magnetic-field-induced molecular alignment in the achiral nematic and smectic C phases of an all-organic radical compound (1) by variable-temperature electron paramagnetic resonance (EPR) spectroscopy at a magnetic field of 0.33 T and by
Autor:
Kazuyoshi Masaki, Naohiko Ikuma, Satoshi Shimono, Rui Tamura, Yoshio Aoki, Jun Yamauchi, Hiroyuki Nohira, Yoshiaki Uchida
Publikováno v:
Ferroelectrics. 343:119-125
We have prepared new all-organic ferroelectric liquid crystalline materials containing a polar and dichiral cyclic-nitroxide unit within the rigid core. These compounds show distinct ferroelectricity in SmC* phases. The spontaneous polarization (Ps)
Autor:
Hiroyuki Nohira, Yoshio Aoki, Jun Yamauchi, Naohiko Ikuma, Rui Tamura, Satoshi Shimono, Kazuyoshi Masaki, Yoshiaki Uchida
Publikováno v:
Advanced Materials. 18:477-480
Publikováno v:
Bulletin of the Chemical Society of Japan. 78:880-885
The absolute configuration of endo-3-benzamidonorborn-5-ene-2-carboxylic acid was determined by X-ray single crystal analysis of the diastereomeric salt with cis-2-(benzylamino)cyclohexylmethanol. ...