a) Design a sequence of reactions, beginning with [PtCl4] 2- , that will result in platinum (II) complexes with four ligands, py, NH3, NO2-, and CH3NH2, with two different sets of trans ligands. [CH3NH2 is similar to NH3 in its trans effect].

b) Pt(II) can be oxidized to Pt(IV) with Cl2 with no change in configuration (Chloride ions can be added above and below the plane of the Pt(II) complex). Predict the results if the two compounds from (a) are reacted with Cl2 and then with one mole of Br- for each mole of the Pt compound.