能垒~6KCaL/mol CH2CH3 H3 C CH2CH3 CH3CH2 CH3 (S)-Ethylmethylamine (R)-Ethylmethylamine unhybridized H CH3 2p orbital CH2CH3 sp3 hybrid Planar transition state CH3 H CH2CH3 H CH3 sp3 hybrid CH2CH3 (S)-Ethylmethylamine (R)-Ethylmethylamine Organic chemistry By Junru Wang Email: wangjr07@163.com 西北农林科技大学理学院 N H3 C CH2 CH3 H N CH3 H : : (S)-Ethylmethylamine (R)-Ethylmethylamine CH3 CH2 N CH3 CH2CH3 H CH3 N CH2CH3 H N CH3 CH2CH3 H : (S)-Ethylmethylamine (R)-Ethylmethylamine : : unhybridized 2p orbital sp 3 hybrid sp 3 hybrid Planar transition state 能垒～6KCaL/mol