Nihon Kessho Gakkaishi
Online ISSN : 1884-5576
Print ISSN : 0369-4585
ISSN-L : 0369-4585
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Volume 18, Issue 4
Displaying 1-5 of 5 articles from this issue
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  • Structure Chemistry of Cyclophanes
    Yasushi KAI
    1976Volume 18Issue 4 Pages 269-284
    Published: July 30, 1976
    Released on J-STAGE: September 30, 2010
    DOIhttps://doi.org/10.5940/jcrsj.18.269
    JOURNAL FREE ACCESS
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    Cyclophanes are the compounds in which more than two atoms of an aromatic ring are incorporated into a medium or large ring system. Cyclophanes have highly strained molecular structure with abnormal physical properties and chemical reactivities. Molecular structures of wide variety of para and metacyclophanes have been determined by X-ray diffraction since the discovery of (2.2) paracyclophane by Brown in 1949. Unusual physical properties investigated by NMR and UV spectra were interpreted in terms of strained molecular structure and transannular interaction of π-electrons of benzene rings. Experimental measurement and theoretical treatment using empirical valence-force potentials were made to estimate the strain energy of cyclophanes quantitatively.
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  • Epitaxy and Misfit Dislocations
    Seigô KISHINO
    1976Volume 18Issue 4 Pages 285-294
    Published: July 30, 1976
    Released on J-STAGE: September 30, 2010
    DOIhttps://doi.org/10.5940/jcrsj.18.285
    JOURNAL FREE ACCESS
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    It is shown that the type of misfit dislocation depends on the ratio of δ/θ, where δ and θ are Δd/d and the twist angle respectively. From the consideration, it is demonstrated that screw-, 60°-, and edge-type misfit dislocations are formed at the interface when δ/θ<<1, = √3, and>>1, respectively. On the other hand, the interfacial energy can be expressed as Em=Eoθ' (A-Inθ') regardless of the misfit dislocation type. Moreover, an observation of a screw-type misfit dislocation, which has not been observed yet, is reported. The sources of misfit dislocation are also discussed.
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  • [title in Japanese]
    [in Japanese], [in Japanese]
    1976Volume 18Issue 4 Pages 295-298
    Published: July 30, 1976
    Released on J-STAGE: September 30, 2010
    DOIhttps://doi.org/10.5940/jcrsj.18.295
    JOURNAL FREE ACCESS
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  • [title in Japanese]
    [in Japanese], [in Japanese]
    1976Volume 18Issue 4 Pages 298-302
    Published: July 30, 1976
    Released on J-STAGE: September 30, 2010
    DOIhttps://doi.org/10.5940/jcrsj.18.298
    JOURNAL FREE ACCESS
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  • [title in Japanese]
    [in Japanese]
    1976Volume 18Issue 4 Pages 303-304
    Published: July 30, 1976
    Released on J-STAGE: September 30, 2010
    DOIhttps://doi.org/10.5940/jcrsj.18.303
    JOURNAL FREE ACCESS
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