8. Please draw the structures of the following cations and determine their point groups: a. Diamagnetic [Ni(CN)4]²- b. Paramagnetic [NiCl4]²-

1) ClassAu as dicimagnetic cr paramagnetic: 3+ ACinisolated. gas-phaoeCr" lon. ahgh-spincdahedral Crt Complex alawspin oclanerdral CoComper

See image below... What determines whether these are high spin or low spin or neither?

What is the ligand field stabilization energy for a high spin d6 complex in terms of Δ0?

Draw the full molecular orbital diagram for [Fe(H2O)6] + 2. Each MO must have a drawing of the interaction and the appropriate Mulliken symbol. Approximate ligands down to their lone pairs, and derive the point group from only the geometry created by those donating atoms.

Giving at least 2 reasons, predict whether [Co(OH2)6]2+ or [Co(NCS)4]2- has a higher Kstab.

what's the point group of an octahedron with one blue face, the others yellow

Systemic name of the coordination compound (Pt(NH3)2(H20)2(CH3CO2)2][CuBr4]

6. Below (top of next page) are shown two possible configurations for a metal center with six cyanide (CN): a trigonal prism (A) and the trigonal anti-prism (B). a. Assign the point groups for A and B assuming the M-C bond distances are the same and that the C-N bond distances are the same. Also, all C-M-C bond angles for nearest neighbor cyanide ligands are 90°. b. Determine the irreducible representations for the C-N stretching vibrations in A and B (you will first need to find the reducible for these modes and then reduce that representation). c. d. Identify the number of IR and Raman active modes for A and B. State and explain whether one can distinguish between the two possible geometries using only IR spectroscopy. N=3 XX N A B

Why Cs2[Cu(CN)4] doesn't exhibit a Jahn-Teller distortion