1. Lecture 274/4/07

2. Central metal and ligands Complex ions vs. Coordination complexes Complex ions and Coordination complexes

4. Complex formation can change physical and chemical properties Ag + (aq) + e -  Ag (s) E° = 0.799 V [Ag(CN) 2 ] - + e-  Ag (s) + 2CN - (aq)E° = - 0.31 V

6. Coordination # 2 4 6 Geometry

7. Naming complex compounds

8. bonds NH 3 Ammine1 COCarbonyl1 H2OH2OAqua1 Br - Bromo1 Cl - Chloro1 CN - Cyano1 F-F- Fluoro1 NO 2 - Nitro1 OH - Hydroxo1 NCS - Isothiocyanato1 SCN - Thiocyanato1 CO 3 2- Carbanato2 C 2 O 4 2- Oxalato2 H 2 NCH 2 CH 2 NH 2 (en)Ethylenediamine2 EDTA 4- Ethylenediaminetetraacetic acid6

9. [Co(NH 3 ) 3 (OH) 3 ] K[Cr(NH 3 ) 2 (C 2 O 4 ) 2 ] diamminetriaquahydroxochromium (III) nitrate Potassium tetrachloroplatinate (II) Name, coordination number, and geometry?

10. Two ethylenediamine ligands and 2 chloride ions form a complex ion with Co 3+ Write the formula of the complex ion. What is the coordination number of cobalt? Rewrite the formula with the appropriate chloride counter ions.

11. Isomers: Structural Same molecular formula, different bonding arrangement 1.Coordination isomerism: 2.Linkage isomerism:

13. Isomers: Stereoisomers 1.Geometric (only square planar and octahedral) cis trans

14. Isomers: Stereoisomers 2.Optical: mirror images 1.Octahedral complexes

15. 19-97 A student wanted to measure the copper (II) concentration in an aqueous solution. For the cathode half-cell she used a silver electrode with a 1.00 M solution of AgNO 3. For the anode half-cell she used a copper electrode dipped into the aqueous sample. If the cell gave a E cell = 0.62 V at 25ºC, what was he copper (II) concentration of the solution?