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The crystal structure of a nonalkenic, cyclic trimer of levoglucosenone

✍ Scribed by Thomas T. Stevenson; Richard H. Furneaux; David Pang; Fred Shafizadeh; Lyle H. Jensen; Ronald E. Stenkamp

Publisher
Elsevier Science
Year
1983
Tongue
English
Weight
600 KB
Volume
112
Category
Article
ISSN
0008-6215

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✦ Synopsis

A single-crystal, X-ray diffraction study was performed on a nonalkenic, cyclic trimer (C,,H,sO,, 4) of levoglucosenone, in order to confirm its chemical structure. Crystals of 4 are orthorhombic, with unit-cell parameters of a = 792.20, b = 1874.35, c = 2383.02 pm, space group P2,2,2,, and z = 8. The structure was solved by direct methods, and refined by least-squares to R = 0.032, based on 2990 unique reflections. Each asymmetrical unit contains two symmetry-independent molecules of 4 and one of acetone. The previously assigned chemical structure and stereochemistry of 4 were found to be correct.

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