516-2配位化合物的同分异构现象 The isomerism of complexes 、总论 1. Definition:凡是化学组成相同的若干配合物,因原子间的连接方式或空间排列方式 的不同而引起的结构和性质不同的现象,称为配合物的同分异构现象 ( Isomerism)。 How to classify isomers This Toolbox explains how to classify pairs of isomers by isomers A water molecule is inside the nation sphere of one isomer and outside the nation sphere of the other. Isomers are built from the same kit of atoms but have Linkage isomers A ligand is attached to the central different"connectivities"; that is, they are joined together atom by one atom in the first isomer and by a in different patterns, In structural isomers, these patterns differ in the way the atoms are positioned in different parts of a compound; in stereoisomers, they differ in the way the Coordination isomers A ligand is in the coordination ligands are positioned around the central atom of the sphere of one metal ion in the first coordination mplex other metal ion in the second tion sphere of the pound and in the coordinati Procedure Identify the type of isomerism relating a pair of complexes Geometrical isomers A ligand is in one position if any, by comparing the two complexes with the different relative to the central atom in one complex, and in a options in the chart in Fig. 21.30. different position in the other. lonization isomers A ligand is inside the Optical isomers The ligands are arranged so that two oordination sphere of one isomer and outside the omers are mirror images but cannot be coordination sphere of the other. the Hydrate Complex identical to its mirror image: Isomers FIGURE 16.1 4++m 2. Classification (1)化学结构异构现象( chemical structure isomerism):化学组成相同,原子间的连 接方式不同而引起的异构现象,称为化学结构异构现象。例如: [Co(NH3)5(NO2)2+ FIl [Co(NH3)5(ONO)+ 25225 §16-2 配位化合物的同分异构现象 The Isomerism of Complexes 一、总论： 1．Definition：凡是化学组成相同的若干配合物，因原子间的连接方式或空间排列方式 的不同而引起的结构和性质不同的现象，称为配合物的同分异构现象 （isomerism）。 2．Classification (1) 化学结构异构现象（chemical structure isomerism）：化学组成相同，原子间的连 接方式不同而引起的异构现象，称为化学结构异构现象。例如： [Co(NH3)5(NO2)]2+ 和 [Co(NH3)5(ONO)] 2+