Рабство у индейтсев северной Америки

absolute configuration anhydride AO's asymmetric atoms asymmetric carbon atoms asymmetric synthesis atrolactic acid atropisomerism axis bent bonds biphenyl bond angles bond lengths C&HS C₂ central carbon CH CH CH₁ CH₂ CH3 CH3 CH3 H chirality chloride chromophore CO₂H compounds conformation COOBU(R COOCH COOH COOH CH COOH COOH COOH coordination number corresponding Cotton effect crystal cyclohexane cylindrical density diastereomeric dl-pairs double bond electron enantiomeric forms enantiomers energy equilibrium ester ethylene example Formula geometry H CH3 H COOH H H H helix HOOC hybridization hydrogen identical illustrated interconversion internuclear line isomerism isomers kcal/mole ketones kinetic resolution ligands meso-form methyl mirror image mixture molecule nonbonded interactions nondissymmetric nuclei o-bonds octant OH H optical rotation optically active orbital point group polymers protons racemic reaction type reactions of type reflection symmetry relationship shown in Figure single bond stereochemistry stereoisomers structural substituents tiomers tion torsional transition type 2b wave length whereas