X-ray scattering from crystalline pentadecaethylene glycol di-n-alkyl ethers
| Autor: | Colin Booth, Colin Price, Timothy G. E. Swales, Roy L. Beddoes |
|---|---|
| Rok vydání: | 1985 |
| Předmět: |
chemistry.chemical_classification
Materials science Polymers and Plastics Scattering Organic Chemistry X-ray General Physics and Astronomy Oligomer law.invention chemistry.chemical_compound Crystallography chemistry law Materials Chemistry Organic chemistry Molecule Orthorhombic crystal system Crystallization Single crystal Alkyl |
| Zdroj: | European Polymer Journal. 21:629-634 |
| ISSN: | 0014-3057 |
| DOI: | 10.1016/0014-3057(85)90096-5 |
| Popis: | 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 A and c = 9.11 A . Scattering from the samples orientated by directional crystallisation was also indexed and the rotational axes identified. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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