Le cyclohexane. Représentation graphique de l'ordinateur d'une molécule de cyclohexane (formule chimique C6H12), montré dans sa forme conformationnelle chaise. Carbo Six

• Contributeur: Science Photo Library
• ID de l’image: 2ACCCFG
• Taille du fichier: 26,8 MB (420,6 KB Téléchargement compressé)
• Autorisations: Modèle - non | Propriété - non
• Dimensions: 3726 x 2516 px | 31,5 x 21,3 cm | 12,4 x 8,4 inches | 300dpi
• Date de la prise de vue: 23 février 1990
• Photographe: MEHAU KULYK/SCIENCE PHOTO LIBRARY

Informations supplémentaires

Cyclohexane. Computer graphics representation of a molecule of cyclohexane (chemical formula C6H12), shown in its chair conformational form. Six carbon atoms (yellow) are arranged hexagonally on various planes; hydrogen atoms are white. A planar hexagon, however, would require a carbon-carbon (C-C) bond angle of 120 degrees, resulting in a highly strained form. Through rotation about the C-C bond, cyclohexane is able to exist in two puckered" forms which are completely free from strain, known as chair and boat conformations. Cyclohexane exists pre- dominantly in the chair form as this corresponds to a lower (more stable) energy value. Compare A705/016 showing boat form."

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