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- W1520791681 abstract "The molecular and crystal structure of polytetrahydrofuran has been determined by X-ray diffraction analysis. The unit cell dimensions are a = 5.48, b = 8.73, c (fiber axis) = 12.07 Å., and β = 134.2°. The space group is C2/c—C. Two molecular chains pass through the unit cell. The skeleton of the molecular chain has a planar zig-zag conformation and the zig-zag plane is parallel to the (100)-plane. The infrared dichroism and pleochroism were measured, and the tentative assignments for the infrared absorption bands were given and discussed. Molekulare Struktur und Kristallstruktur von Polytetrahydrofuran wurden durch eine Röntgenbeugungsanalyse bestimmt. Die Elementarzelle besitzt die Abmessungen a = 5,48, b = 8,73, c (Faserachse) = 12,07 Å und β = 134,2°. Die Raumgruppe ist C2/c—C62h. Zwei Molekülketten durchlaufen die Elementarzelle. Die Ketten liegen in einer ebenen Zick-zack-Konformation vor; die dadurch definierte Ebene fällt mit der kristallographischen (100)-Ebene zusammen. Der Infrarot-Dichroismus und -Pleochroismus wurden gemessen und eine versuchsweise Zuordnung der Absorptionsbanden angegeben und diskutiert." @default.
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- W1520791681 date "1965-04-26" @default.
- W1520791681 modified "2023-10-18" @default.
- W1520791681 doi "https://doi.org/10.1002/macp.1965.020830109" @default.
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