ISSN:
0025-116X
Schlagwort(e):
Chemistry
;
Polymer and Materials Science
Quelle:
Wiley InterScience Backfile Collection 1832-2000
Thema:
Chemie und Pharmazie
,
Physik
Notizen:
High-resolution 13C NMR spectra of cyclic paraffins, n-paraffins and polyethylene were measured in 1,2,4-trichlorobenzene solution, and the results were compared with the solid state 13C high resolution NMR data measured previously. It is proposed that in cyclic paraffins up to C32, the conformation in the solid state is retained even in solution, all the methylene carbons within the cyclic paraffin exhibiting identical gauche-trans population with fast transition between the conformers in the ring plane, whereas in cyclic paraffins of larger carbon number, the conformation in the solid state is not retained in solution, the gauche-trans populations being different in this case. The conformation of n-paraffins and polyethylene is also discussed.
Zusätzliches Material:
3 Ill.
Materialart:
Digitale Medien
URL:
http://dx.doi.org/10.1002/macp.1985.021861010
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