Electron crystallography of the polymethylene chain. 2. The lamellar interface of n-paraffin solid solutions1
Abstract
Electron diffraction measurements were made on a series of binary solid solutions formed from n-C24H50 and n-C26H54. When the longer chain is most dilute, crystal structure analyses favor a mixed-chain packing arrangement, based on an average n-C25H52 layer, a model that can incorporate the chain-end conformational disorder measured by vibrational spectroscopy. Published x-ray data from a 3:1 binary combination can also be interpreted to support this model. The alternative view, requiring an all-trans chain with methyl groups from the longer chain component protruding into the lamellar interface, is neither consistent with the spectroscopic measurements nor with independent measurements of lamellar surface flatness.
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- Electron crystallography of the polymethylene chain. 1. The crystal structure of n-tritriacontane in the B-polymorph1
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- Crystal structures of two 4-bromopyrazole derivatives
- The crystal and molecular structures of some nickel(ll)bis(O-alkyldithiocarbonate)s and nickel(II)bis(N,N-dialkyldithiocarbamate)s: an evaluation of the coordination potential of 1,1-dithiolate ligands in their nickel(II) complexes
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