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Are the rings planar or nonplanar? | ![]() |
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Cyclohexane has a heat of combustion that is about the same as for an unbranched alkane | ![]() |
CONFORMATIONS OF CYCLOHEXANEHeat of Combustion Data suggests that cyclohexane is free of angle strain. To get tetrahedral geometries for the carbons, the ring must be nonplanar. | ![]() |
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CONFORMATIONAL INVERSION OR "RING-FLIPPING" IN CYCLOHEXANE | ![]() |
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In the ring-flipping process, the chair goes through the following conformations:
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CONFORMATIONAL ANALYSIS OF MONOSUBSTITUTED CYCLOHEXANESThe most stable conformation is a chair with the substituent occupying an equitorial position | ![]() |
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Constitutional isomers differ in the order of their atomic connections. Stereoisomers have their atoms bonded in the same order, but they differ in the arrangement of atoms in space. | ![]() |
The compound in the box exists as a pair of stereoisomers. | ![]() |
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The cis isomer is less stable due to steric crowding. | ![]() |
DISUBSTITUTED CYCLOHEXANES | ![]() |
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