1. Below is a molecular orbital diagram for a generic metallocene. Based on this, contrast the metal carbon bond lengths in chromocene [Cr(CsHs)2], ferrocene [Fe(CsHs)2] and nickelocene [Ni(CsHs)2]. Which would you expect to be a reductant, which is an oxidant and which is stable? Justify your answer. M MCP 2 Cp equ ezg 4p azu ezgi ezu azu etu ezu 45 aig 3d alg eig 20 equ 19 ezg 19 1gazu

9. Name the following compounds. a. Ni(CO)4 b. Naz[Co(H₂O)2(OH)4] c. [Ag(NH3)2] Br d. [Co(NH3)4C1]SO4 g. [Ni(NH3)4(H₂O)2](NO3)2

3a) The nitrosyl ion, NO*, is a very rare case of a cationic ligand that can function as a Lewis base. Draw the Lewis structure of this ligand under consideration of the VSEPR rules and indicate any formal charges on the constituent atoms. 3b) How many electrons does the NO* ligand contribute on the ionic model and the neutral model, respectively? Assume that the Metal-N-O bonding angle is 180° upon coordination.

Write the formula for diaquadibromoplatinum (II). C [Pt(H2O)2Br2]2 C [Pt(H2O)2]Br2*1 C [Pt(H2O)2]Br2 C [Pt(H2O)2]Br22 C (Pt(H2O)2Br2] C PE(H,O),Bra]*1

[Fe(H2O)6]2+,  calculate the bond order

Consider the reactions 1. [Cr(H2O)6]** + [C©CI(NH3)s]* → [Co(NH3)s(H2O)]²* + [CrCl(H2O)s]** 2. [Fe(CN)6]* + [Mo(CN)s]-→ [Fe(CN)6]³¯ + [Mo(CN)8]* Which one of the following is the correct statement? (i) Both involve an inner sphere mechanism (ii) Both involve an outer sphere mechanism (iii) Reaction 1 follows inner sphere and reaction 2 follows outer sphere mechanism (iv) Reaction 1 follows outer sphere and reaction 2 follows inner sphere mechanism (A) i (B) ii (C) iv (D) ii

Give the electron configuration and the number of unpaired electrons for: (a) Cr3+; (b) Ti4+; (c) Co3+; (d) Ta2+.

Consider the [VII(H2O)6]2+ ion. Explain why there are this number of bands and not more or less, which might be expected (i.e., which sets of electronic transitions give rise to these bands).

How many valence electrons surround the metal atom in potassium ferrioxalate (K3[Fe(C2O4)³])?

8) Bipyridine ligands are known to be redox active. Draw the product of the hypothetical reduction of the following molecule where you assume the bpy is getting reduced and not the metal. Draw a static resonance structure showing the positions of any multiple bonds. What might you look for in the solid- state crystal structure (or even a calculated structure) to determine if a bpy is exhibiting redox-active behavior 120 2e0