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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
Denticity = # of attachments a ligand makes
Common Ligands
Monodentate Ligands:
Bidentate Ligands:
Polydentate Ligands:
Halides: F-, Cl-, Br-, IO2-, S2-, OH-, CNNH3, H2O, CO
heme, salen
Monodentate complexes
Monodentate complexes
Bidentate ligand complexes
Ni(DMG)2
Co(en)2Cl2
Bidentate complexes
Co(en)32+
Fe(phen)32+
Polydentate complexes
Co(salen)+
chlorophyll
Polydentate complexes
Fe-heme
O2-Fe-heme
Geometric isomerism
Geometric isomerism
Fac- isomer
Mer- isomer
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