Colors and Spectroscopy of Transition Metal Complexes.

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Presentation transcript:

Colors and Spectroscopy of Transition Metal Complexes

Why is: 1.Mn 2+ (aq) colorless 2.Cu 2+ (aq) less deeply blue colored than Cu(NH 3 ) Zn 2+ (aq) colorless 4.MnO 4 - deeply colored 5.W(CO) 6 colorless

Sigma Interaction Strength Spectrochemical Series: I - < Br - < Cl -, F - < OH - < OH 2 < NH 3 < en < CN - < CO

Pi Donor Ligands: Mainly oxides and halides

Mn 2+ (aq) MnO 4 -

Pi Acceptor Ligands: CO, CN -, pyridine

Pi Acceptor Ligands and spectroscopy: CO, CN -, pyridine

Reactivity of Transition Metal Complexes Substitution Reactions Redox Reactions Photochemically-Induced Reactions

Substitution Reactions: why would they occur?

Catalysis Homogeneous vs. Heterogeneous Transition metal complex catalysis

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