A-Level CAIE Chemistry A2 28.4.1—Types of stereoisomerism shown by complexes Question Bank

• Describe the types of stereoisomerism shown by complexes, including those associated with bidentate ligands:

- (a) geometrical (cis/trans) isomerism, e.g. square planar such as [Pt(NH₃)₂Cl ₂] and octahedral such as [Co(NH3)4(H2O)2]2+ and [Ni(H2NCH2CH2NH2)2(H2O)2]2+

- (b) optical isomerism, e.g. [Ni(H2NCH2CH2NH2)3]2+ and [Ni(H2NCH2CH2NH2)2(H2O)2]2+