Lecture Guide Transition Metals and Coordinated Compounds

Lecture Guide
Transition Metals and Coordinated Compounds
I. Metals
1. What is the Lithosphere?
III. Isomers of Coordination Complexes
1. What was all the controversy about between Werner and Jorgensen?
2. What was the major metal used during the Bronze Age?
3. Nonmetals are best characterize by their ability to do what?
2. What are isomers, and what is the difference between structural isomers
and stereoisomers?
4. What are some physical properties of metal?
5. The sea of electron model is also known as what theory?
6. Explain the major problem with the VBT ?
7. What bond theory is used to explain how insulator works?
8. Define HOMO and LUMO in the context of MO theory.
9. Which transition metal has the largest range of oxidation state?
10. What is the trend in the atomic radii for transition metals?
11. What does the lanthanide contraction explain?
12. What is meant by ferromagnetism?
II. Nomenclature
1. In coordination chemistry what are Lewis acids and Lewis base?
2. In coordination chemistry, what orbitals are used for bonding?
3. What is a coordination sphere?
4. State the type of geometry for complexes with the following coordination
5. What is the difference between a monodentate and a polydentate ligand?
6. Write four examples of each:
i) monodentate neutral ligand
ii) bidentate neutral ligand
iv) polydentate charged ligand.
3. Draw the three different coordination sphere isomer for a compound with
one cobalt, three chlorides and six waters.
4. What is a linkage isomer. Show the structures of these isomers with one
cobalt, five amine and one NO2 group.
5. Draw the two geometric isomers and label each cis or trans for the complex
with a platinum, two amine and two chlorides.
6. What are chiral centers? Will a chemical with a chiral center always yield
to optical isomers?
7. What experimental method is used to detect if chemicals are optically
IV. Crystal Field Theory
1. What do gemstones owe their brilliant color to?
2. What material was Crystal Field Theory used to explain initially ?
3. List the following in order of increasing energy difference:
i) splitting of outer d-orbitals in octahedral field
ii) electrostatic attraction
iii) ligand d-electron repulsion
iii) monodentate charged ligand
4. What is the basic assumption of CFT?
5. Describe the splitting of the degenerate d-orbitals in an octahedral field.
What is the meaning of 10Dq.
6. What are the factors, which determines the color of a complex?
7. Describe how the spectrochemical series relate to the splitting
8. What factors determine if a metal complex is high spin or low spin?
7. What chelate are also a hexadentate?
8. What is the driving force for the chelating effect?
9. High Spin and Low Spin metal complexes occur only for transition metal
complexes with how many electrons in its d-orbital?
10. Describe the function of the color wheel?
9. Name 2 biological examples, which uses chelating ligands.
11. Why are zinc complexes colorless?
10 Name the following chemicals:
i) K[Co(C2O 4) 2 (NH3) 2]
12. Consider the following complexes and the color of light, which is absorb by
each complex, what is the expected color of the each?
i) [CoF6]3+ absorbs 700 nm
ii) [Cr(en)2(OH)2]NO2
iii) [Cu(en)2][HgCl4]
11) What are the names of the following anionic metals:
i) iron
ii) silver
iii) gold
12. Describe the factors influening the coordination number for a complex..
ii) Co(NH3)6]3+ absorb blue light
iii) [Co(en)3]3+ absorb 470 nm
iv) [CoH2O)6]3+ absorb yellow light
13; Diagram the splitting pattern for the d-orbitals for transition mental
complexes with the following geometry
i) tetrahedral
ii) square planar
iii) trigonal bypyramidal
iv) linear