ISSN:
0018-019X
Keywords:
Chemistry
;
Organic Chemistry
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Notes:
Cyclododecane crystallises at room temperature in the monoclinic system, a = 13.27 Å, b = 8.28 Å, c = 5.44 Å, β = 99° 32′ (Z = 2), space group C2/m. The crystal structure was determined from the three-dimensional PATTERSON function and refind by three-dimensional difference syntheses. Because of the large temperature factor and of disorder arising from the presence of statistical mirror planes at y = 0 and y = ½, the observed data are almost equally compatible with two possible molecular conformers. Both of these are built of four nearly planar zig-zag units each of four atoms, with an atom shared in common between successive units, but the conformations about the C—C bonds formed by the common atoms are all anti-skew for one model and all syn-skew for the other. Reasons are given for regarding the syn-skew model as the more likely.
Additional Material:
8 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/hlca.19600430104
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