3 co 6e total 18e co c co c c c c c c c o o o o o o o

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3 CO 6e- Total 18e-CoCCoCCCCCCCOOOOOOOOCo(0) d9 2 -CO 2e- 3 CO 6e- 1 Co-Co 1e- Total 18e-
HW # 1 2016 3 2. (12 pts)Propose an 18e- structurefor the following metal/ligand combinations. Use at least one of each metal and ligand listed. Complexes must be neutral. Don’t use more than 2 metal centers. Clearly show your electron counting. Ligands are shown without charges, please indicate the proper ligand charge in your electron counting. Draw a reasonable structure showing the geometry about the metal center(s). a) Tc, Cp, O, P(OMe)3b) Ni, dmpe (chelating), -CO, CO TcOP(OMe)3P(OMe)3Tc(+3) d4 Cp6e- O24e- 2 PR34e- Total 18e-NiCNiCCPR2R2PPR2R2PCOOOONi(0) d10 2 -CO 2e- CO 2e- 2 PR3 (dmpe) 4e- Total 18e-c) Ta, Cp, C-R d) Cr, Cl, C≡NMeTaCRTa(+5) d0 2 Cp12e- CR36e- Total 18e-CrCCCCClCClNRNRRNNRNRCr(+2) d4 2 Cl4e- 5 C≡NR10e- Total 18e- 7-coordinate Cr with “skinny” ligands is A-OK

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