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Coordination Chemistry

Coordination Chemistry. ligands bonding to metals. Donor-Acceptor Complexes. Definitions. Lewis Acid = acceptor = usually a transition metal cation Lewis Base = donor = ligand = usually something with a lone electron pair Coordination number = # of metal-ligand attachments

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Coordination Chemistry

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  1. Coordination Chemistry ligands bonding to metals

  2. Donor-Acceptor Complexes

  3. Definitions Lewis Acid = acceptor = usually a transition metal cation Lewis Base = donor = ligand = usually something with a lone electron pair Coordination number = # of metal-ligand attachments Denticity = # of attachments a ligand makes

  4. Common Ligands Monodentate Ligands: Halides: F-, Cl-, Br-, I- O2-, S2-, OH-, CN- NH3, H2O, CO Bidentate Ligands: Polydentate Ligands: heme, salen

  5. Monodentate complexes

  6. Monodentate complexes

  7. Bidentate ligand complexes Co(en)2Cl2 Ni(DMG)2

  8. Bidentate complexes Co(en)32+ Fe(phen)32+

  9. Polydentate complexes Co(salen)+ chlorophyll

  10. Polydentate complexes Fe-heme O2-Fe-heme

  11. Geometric isomerism

  12. Geometric isomerism Fac- isomer Mer- isomer

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