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The Low-Temperature Crystal Structure of RS-Camphor

✍ Scribed by Asiloé J. Mora; Andrew N. Fitch

Publisher
Elsevier Science
Year
1997
Tongue
English
Weight
285 KB
Volume
134
Category
Article
ISSN
0022-4596

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✦ Synopsis

The crystal structure of the low-temperature phase of RScamphor (1,7,heptan-2-one, C 10 H 16 O) has been solved at 100 K by high-resolution powder X-ray diffraction using synchrotron radiation. The structure is orthorhombic, space group Cmcm, with a‫)2(1438.6؍‬ A s , b‫)3(4856.11؍‬ A s , c‫)3(0005.11؍‬ A s , and Z‫.4؍‬ The structure has four-fold disorder of the molecules. Left-handed and right-handed molecules are situated on the same crystallographic site, with an additional two-fold rotational disorder of the molecules. The structure was obtained from a combination of auto indexing, direct methods, and a grid search of molecular orientations.

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Low-Temperature Crystal Structure of S-camphor Solved from Powder Synchrotron X-ray Diffraction Data by Simulated Annealing
✍ Michela Brunelli; Andrew N. Fitchci; Asiloé J. Mora 📂 Article 📅 2002 🏛 Elsevier Science 🌐 English ⚖ 443 KB

The ordered, low-temperature crystal structure of the pure enantiomer of camphor (C 10 H 16 O) has been solved from highresolution powder synchrotron X-ray di4raction data. The structure is orthorhombic, space group P2 1 2 1 2 1 , Z ‫؍‬ 8, with a ‫؍‬ 8.9277(2) A s , b ‫؍‬ 27.0359(5) A s , and c ‫؍‬