Chemistry 401

Intermediate Inorganic Chemistry

University of Rhode Island

Fall 2019

Exam 3

1. Write the balanced half-reaction and find the standard reduction potential for the reduction of dimanganese trioxide to manganese metal in base.

2. For the following metal complexes, give the systematic name, give the point group, find the LFSE in units of Dq and P, indicate if the complex is expected to be Jahn-Teller active, and give the spin-only magnetic moment in units of Bohr-magnetons.

a.

b.

c.

d.

3. For the following metal complexes, show the structure, give the point group, and indicate if the complex is stable by the EAN rule.

a. Hexacarbonylchromium(0)

b. Bis-(η⁵-cyclopentadienyl)cobalt(II)

c. Bis-(η¹-cyclopentadienyl)-bis-(η⁵-cyclopentadienyl)titanium(IV)

d. trans-Carbonylchlorobis(triphenylphosphine)iridium(I)

 

Answers

Possibly useful information

Spectrochemical Series

I^– < Br^– < S^2– < SCN^– < Cl^– < NO₃^– < F^– < ox^2– < H₂O < SCN^– < CH₃CN < NH₃ < en < bpy < phen < NO₂^– < PPh₃ < CN^– < CO

ox^2–: ^–O₂CCO₂^– en: H₂NCH₂CH₂NH₂ bpy: phen: PPh₃:

μ = [n(n+2)]^½ μ_B

pH = 14