Ch. 4 - Alkanes and CycloalkanesWorksheetSee all chapters
All Chapters
Ch. 1 - A Review of General Chemistry
Ch. 2 - Molecular Representations
Ch. 3 - Acids and Bases
Ch. 4 - Alkanes and Cycloalkanes
Ch. 5 - Chirality
Ch. 6 - Thermodynamics and Kinetics
Ch. 7 - Substitution Reactions
Ch. 8 - Elimination Reactions
Ch. 9 - Alkenes and Alkynes
Ch. 10 - Addition Reactions
Ch. 11 - Radical Reactions
Ch. 12 - Alcohols, Ethers, Epoxides and Thiols
Ch. 13 - Alcohols and Carbonyl Compounds
Ch. 14 - Synthetic Techniques
Ch. 15 - Analytical Techniques: IR, NMR, Mass Spect
Ch. 16 - Conjugated Systems
Ch. 17 - Aromaticity
Ch. 18 - Reactions of Aromatics: EAS and Beyond
Ch. 19 - Aldehydes and Ketones: Nucleophilic Addition
Ch. 20 - Carboxylic Acid Derivatives: NAS
Ch. 21 - Enolate Chemistry: Reactions at the Alpha-Carbon
Ch. 22 - Condensation Chemistry
Ch. 23 - Amines
Ch. 24 - Carbohydrates
Ch. 25 - Phenols
Ch. 26 - Amino Acids, Peptides, and Proteins

Solution: Table I: Interaction Energy Groups                                kcal/mol (each interaction) H : H eclipsed                           1.0 CH3 : H eclipsed                       1.4 CH3 : CH3CH2  

Problem

Table I: Interaction Energy

Groups                                kcal/mol (each interaction)

H : H eclipsed                           1.0

CH: H eclipsed                       1.4

CH: CH3CH2  eclipsed           2.7  

H : CH(CH3)2 eclipsed              2.0

H : C(CH3)eclipsed                 2.8

CH3 : H  1,3-diaxial                   0.9

CH3CH2 : H 1,3-diaxial            0.95

(CH3)2CH : H  1,3-diaxial          1.1

(CH3)3C : H  1,3-diaxial             2.7

CH3 : CH3   gauche                    0.9

CH3 : CH3CH2  gauche                 1.0

CH3 : (CH3)2CH  gauche            1.2

(CH3)3C : (CH3)3C  1,3-diaxial    4.1