ORGANIC CHEMISTRY Chapter 4 4.11A Cyclopentane 信封式 半椅式 The"envelope or bent" form of cyclopentane 渊渊 Department of Chemistry, Xiamen UniversityORGANIC CHEMISTRY Department of Chemistry, Xiamen University Chapter 4 4.11A Cyclopentane 信封式 半椅式 The “envelope” or “bent” form of cyclopentane