METAL-COMPLEXES OF 2,4-DIAMINO-5-(3',4',5'-TRIMETHOXYBENZYL)PYRIMIDINE (TRIMETHOPRIM) AND 2,4-DIAMINO-5-(P-CHLOROPHENYL)-6-ETHYLPYRIMIDINE (PYRIMETHAMINE) .3. SYNTHESES AND X-RAY STRUCTURES OF [RH2(O2CCH3)4(TRIMETHOPRIM)2].2C6H6.CH3OH AND [RH2(O2CCH3)4(PYRIMETHAMINE)2]