# Homework Set 1

Name: ______________________________

Section: _____________________________

Student ID#:__________________________

## Q1.1

Draw the molecular orbital (MO) diagrams for $$N_2$$ and $$CO$$. Use your MO diagrams to explain which molecule is a better $$\pi$$-acceptor when coordinated to a transition metal.

## Q1.2

Draw reasonable Lewis structures (including resonance) and predict the molecular geometry for the following molecules:

1. $$NO_2$$
2. $$ClF_3$$
3. $$OF_2$$
4. $$NO$$
5. $$XeO_3$$
6. $$POCl_3$$
7. $$XeF_2$$
8. $$SF_4$$

## Q1.3

Indicate if following molecules are X or L type ligands. Label each with $$\sigma$$-donor, $$\pi$$-acceptor, or $$\pi-$$donor?

1. $$Ph_3P$$
2. $$Cy_3P$$
3. $$SCN^-$$
4. $$CH_3COO^-$$
5. benzyne
6. $$NO$$

## Q1.4

Draw and name all possible coordination modes (hapticity) of a cyclopentadienyl ligand to a transition metal.

## Q1.5

For the following complexes, provide the formal oxidation state, $$d^n$$ configuration, and total valence electron count for the metal.

(a)

(b)

(c)

(d)

(e)

(f)

(g)

(h)