Coordination Chemistry Solutions: #23

23.* (1991 2 3) For each of the following complexes, give the oxidation state, number of d electrons, coordination number, number of possible isomers, and state whether the complex is chiral: A. Co(en)33+ B. Pt(NH3)2(Br)2 C. Ni(CO)4 D. Re(CH3)(CO)5

Complex

Oxidation State

dn

Coordination

Number

# of isomers

Is it chiral?

A. Co(en)33+

+3

6

6

2 (d, l)

Yes

B. Pt(NH3)2(Br)2

+2

8

4

2 (cis, trans)

No

C. Ni(CO)4

0

10

4

1

No

D. Re(CH3)(CO)5

+1

6

6

1

No