1. Draw all possible electron configurations for octahedral complexes having d" electrons where n=2-9. You will need to draw two spin states for n=4,5,6, and 7 (high spin and low spin configurations). For example, in the case of n=5 one should draw: Low Spin High Spin eg eg 10Dq 10Dq t2g t2g

Please don't provide handwritten solution

A hypothetical metal M forms the following complexes with the generalized ligands X, Y, and Z:   Complex ion Observed color [M(X)6]3+ green [M(Y)6]3+ blue [M(Z)6]3+ yellow Order these ligands according to their ability to split d orbitals. In other words, set up a spectrochemical series, from strongest to weakest ligand field strength. Rank from strongest to weakest ligand field strength.    -X -Z -Y

Match the orbitals below to the higher and lower energy levels when an octahedral complex undergoes ligand field splitting. dx2-y2 Orbital 1 Orbital 1 Orbital 2 Orbital 3 Orbital 4 Orbital 5 L d₂2 Orbital 2 L dyz Orbital 3 dxz Orbital 4 [Choose] ◊ [Choose] ↑ [Choose] ◊ [Choose] [Choose] ↑ L dxy Orbital 5

Fill in the missing information to complete the names of the coordination compounds/complexes shown below. NH2 H₂N NH2 Br O N NO₂ H2 a. bromobis(ethylene diamine)-o- nitrito x cobalt (III) nitrate N= [92]- Ph3P Cú PPh3 b. bispyridylbis(triphenylphosphine) x copper (II) sulphate

3. Given the ligands on the Ru(II) center in the following, explain whether the complex is likely to be high-spin or low- spin. C4 û U a C2 02 03 P1 Ru C12 Cl1 6. Would you expect the complex in #3 to be effective as a potential catalyst? Why or why not?

Identify the first-row transition metal for the following 18-electron species: a. [M(CO)3(PPh3)]¯¯ c. (n*-CgHg)M(CO), b. HM(CO)5 d. [(n-C5H5)M(CO)3]2 (assume single M-M bond)