3.1.2 The conformations of cycloalkanes Construct a model of cyclohexane (C6H12), a six-membered ring of carbon atoms with two hydrogen atoms attached to each carbon atom. Is the ring planar or puckered? 1. (a) 55 (b) The cyclohexane ring can be arranged in many forms. The two major forms are commonly called the chair conformation and the boat conformation. For instance in the chair conformation; consider the two hydrogen atoms at each carbon. One C-H bond is roughly in the mean plane of the molecule and one C-H bond is roughly perpendicular to that plane. These two positions are referred to, respectively, as equatorial and axial, as shown below. axial bond H equatorial bond Hequatorial H axial H (i) Arrange the model in the chair form. Clearly add and label the axial (a) and equatorial (e) hydrogens on the sketch of the chair confirmation below. (c) Arrange the model in the boat form. Clearly add and label the axial (a) and equatorial (e) hydrogens on the sketch below.

3.1.2 The conformations of cycloalkanes Construct a model of cyclohexane (C6H12), a six-membered ring of carbon atoms with two hydrogen atoms attached to each carbon atom. Is the ring planar or puckered? 1. (a) 55 (b) The cyclohexane ring can be arranged in many forms. The two major forms are commonly called the chair conformation and the boat conformation. For instance in the chair conformation; consider the two hydrogen atoms at each carbon. One C-H bond is roughly in the mean plane of the molecule and one C-H bond is roughly perpendicular to that plane. These two positions are referred to, respectively, as equatorial and axial, as shown below. axial bond H equatorial bond Hequatorial H axial H (i) Arrange the model in the chair form. Clearly add and label the axial (a) and equatorial (e) hydrogens on the sketch of the chair confirmation below. (c) Arrange the model in the boat form. Clearly add and label the axial (a) and equatorial (e) hydrogens on the sketch below.

Chemistry & Chemical Reactivity

10th Edition

ISBN:9781337399074

Author:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel

Publisher:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel

Chapter23: Carbon: Not Just Another Element

Section23.2: Hydrocarbons

Problem 23.3CYU: There are 17 possible alkene isomers with the formula C6H12. Draw structures of the five isomers in...

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Perspective drawings of Chair and Boat Conformers fo Cyclohexane (C6H12). Note it is impossible to place all the carbons in the same plane without straining the bonds. Take two opposite carbons and pull both of them up to make one conformation adn then pull one of them down to make the other conformation. Can you inercovert one conformer int othe other without breaking any bonds? Explain why these represent conformers and not isomers.
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