ORGANIC CHEMISTRY Chapter 4 o The different arrangements of atoms caused b rotation about a single bond are called conformations A s of the molecule, and a specific conformation is called a conformer(构象异构体, conformation Isomer) o an analysis of the energy changes that a molecule undergoes as groups rotate about single bonds Is called a conformational analysis(构象分析 o Unlike constitutional isomers, though, different conformers can't usually be isolated because they interconvert too rapidly Department of Chemistry, Xiamen UniversityORGANIC CHEMISTRY Department of Chemistry, Xiamen University Chapter 4 The different arrangements of atoms caused by rotation about a single bond are called conformations (构象)of the molecule, and a specific conformation is called a conformer (构象异构体, conformation isomer). An analysis of the energy changes that a molecule undergoes as groups rotate about single bonds is called a conformational analysis (构象分析). Unlike constitutional isomers, though, different conformers can’t usually be isolated because they interconvert too rapidly