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Definition
| the prefix used to denote alkanes with the empirical formula CnH2n |
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| radicals derived from cycloalkanes by abstraction of a hydrogen atom |
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Definition
| substituents on a cycloalkane located on the same face |
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Definition
| substituents on a cycloalkane located on opposite faces |
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Definition
| compounds that have identical connectivities but differ in their arrangement of their atoms in space |
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| cis and trans isomers can be interconverted only by _____ bonds |
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Definition
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| conformers are readily equilibrated by _____ about bonds |
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Definition
1. small rings (cyclopropane, cyclobutane)
2. common rings (cyclopentane, cyclohexane, cycloheptane)
3. medium rings (from 8- to 12- membered)
4. large rings (13-membered & larger) |
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Term
| chair conformation of cyclohexane |
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Definition
| carbons 1 & 4 are moved out of planarity in opposite directions; resembles a chair; eclipsing is completely absent; bond angles are nearly tetrahedral |
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Definition
| a less stable conformation of cyclohexane; carbons 1 & 4 are out of plane in the same direction |
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Definition
| strain resulting from steric crowding of two groups across a ring |
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Term
| is boat form or twist-boat/skew-boat conformation of cyclohexane more stable? |
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Definition
| twist-boat/skew-boat conformation |
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Definition
| carbon-hydrogen bonds that are nearly parallel to the principle molecular axis |
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Definition
| carbon-hydrogen bonds that are nearly perpendicular to the axis & close to the equatorial plane |
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Definition
| when transannular strain is due to axial substituents on carbon atoms that have a 1,3-relation |
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| the axial substituent is _____ to two of the ring carbons (C3 and C3') |
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Definition
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Term
| when the substituent is in the equatorial position, it is _____ to two of the ring carbons (C3 and C3') |
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Term
| two forms of chair methylcyclohexane are in equilibrium; which conformer is more stable? |
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