Colors and Spectroscopy of Transition Metal Complexes

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Presentation transcript:

Colors and Spectroscopy of Transition Metal Complexes

Why is: Mn2+(aq) colorless Cu2+(aq) less deeply blue colored than Cu(NH3)42+ Zn2+(aq) colorless MnO4- deeply colored W(CO)6 colorless

Spectrochemical Series: Sigma Interaction Strength Spectrochemical Series: I- < Br - < Cl- , F- < OH- < OH2 < NH3 < en < CN- < CO

Pi Donor Ligands: Mainly oxides and halides

Mn2+(aq) MnO4 -

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