24. Explain why [MnF₆]³⁻ has Jahn-Teller distortion, but [Mn(CN)₆]³⁻ does not. Calculate μ_spin-only for both complexes. (10%)

 (a) How many spheres (or atoms) in total does a body-centered cubic unit cell have? Draw the unit cell and show your work. (5%)

(b) Draw a simple cubic unit cell. Calculate the packing efficiency of a simple cubic unit cell. (5%)

(a) Draw a qualitative molecular orbital diagram for the complex Pd(CH₃)₄. Provide an appropriate symmetry label for each molecular orbital, and fill in the electrons. (7%)

(b) Draw a qualitative d-orbital splitting diagram for Pd(CH₃)₄ using a crystal field theory approach. Remember to label d-orbitals. (6%)

(c) Do your answers of the d-orbital splitting to parts (a) and (b) agree? Briefly explain why or why not. (2%)

 (a) Zr(CH₃)₆²⁻ (3%)

(b) Fe(CO)₅ (3%)

(c) Mn(CH₃)₄{P(CH₃)₃}₂ (3%)

25. The compound cisplatin, Pt(NH₃)₂Cl₂, has been studied extensively as an antitumor agent. The reaction for the synthesis of cisplatin is: K₂PtCl₄(aq) + 2 NH₃(aq) → Pt(NH₃)₂Cl₂(s) + 2 KCl(aq) Write the electron configuration for platinum ion in cisplatin. Most d⁸ transition metal ions exhibit square planar geometry. Draw the structure of cisplatin and give chemical names for cisplatin based on either Stock system or Ewing-Bassett system. (6%)

(b) Briefly describe the way they interact with water.

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