postclass41 - 1. Final exam: Saturday, May 3rd; 9:00 11:00...

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1. Final exam: Saturday, May 3 rd ; 9:00 – 11:00 am; seating chart on UB Learns 2. Course evaluations: ubcats.cas.buffalo.edu 3. Today: a) Crystal field theory revisited b) Summary and conclusions c) Thoughts on the final exam
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Recall: 2. Color 1. Oxidation state 3. Magnetic properties 4. Geometries and isomerism
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700 650 600 550 500 450 400 0.00 0.05 0.10 0.15 0.20 Absorbance Wavelength (nm) Why is [Ni(H 2 O) 6 ] 2+ green?
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700 650 600 550 500 450 400 0.00 0.05 0.10 0.15 0.20 Absorbance Wavelength (nm) Why is [Cu(H 2 O) 6 ] 2+ blue? Why blue and not green or purple?
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700 650 600 550 500 450 400 0.00 0.05 0.10 0.15 0.20 Absorbance Wavelength (nm) Why is [Cu(H 2 O) 6 ] 2+ blue?
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d z 2 d x 2 -y 2 d xy d yz d xz Figure 24.29 d x 2 -y 2 d z 2 d xy d yz d xz d x 2 -y 2 d z 2 d xy d yz d xz d x 2 -y 2 d z 2 d xy d yz d xz Free TM ion TM ion in h Crystal field theory (octahedral geometry) t 2g e g
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[Ti(H 2 O) 6 ] 3+ d x 2 -y 2 d z 2 d xy d yz d xz t 2g e g [V(H 2 O) 6 ] 3+ d x 2 -y 2 d z
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postclass41 - 1. Final exam: Saturday, May 3rd; 9:00 11:00...

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