stereoisomers are compounds that are made up of the same types and numbers of atoms bonded together in the same sequence but with different spatial arrangement. NH, NH, H,0 Br-OH, H.O Br Br H Cr/ Cr/ Cr H,0 H,0 Br TNH geometric NH NH HO isomers (I) (I) (Ⅲ) 同种配体全在反位 NH在反位； H,O,Br在顺位 H,O在反位；NH,Br在顺 Br NH, NH, 7+ NH, H,9—WH HN OH, Cr Cr/ optical H,C T NH HO- Cr/ TBr Br- TOH isomers Br Br Br (V) (V) 乳异粉 Br在反位；H2O,NH在顺位 同种配体全在顺位，二者互成镜像 ◆ stereoisomers are compounds that are made up of the same types and numbers of atoms bonded together in the same sequence but with different spatial arrangement。 optical isomers 旋光异构体 geometric isomers optical isomers