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X-ray scattering from crystalline pentadecaethylene glycol di-n-alkyl ethers

✍ Scribed by T.G.E. Swales; R.L. Beddoes; C. Price; C. Booth

Book ID: 103072078
Publisher: Elsevier Science
Year: 1985
Tongue: English
Weight: 672 KB
Volume: 21
Category: Article
ISSN: 0014-3057
DOI: 10.1016/0014-3057(85)90096-5

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✦ Synopsis

X-ray scattering from single crystals of the di-n-alkyl ethers of pentadecaethylene glycol with n = 13, 15 and 16 was consistent, for all practical purposes, with an orthorhombic unit cell including 4 molecules with space group Pcca. The long spacing varied with chain length but the other unit cell dimensions were common to all three samples. Powder photographs from a wider range of pentadecaethylene glycol di-n-alkyl ethers, n = 13 to 18 inclusive, were indexed by means of the orthorhombic unit cell with average values of a = 9.38 ,~ and c = 9.11 ,~. Scattering from the samples orientated by directional crystallisation was also indexed and the rotational axes identified.

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