The Tanabe-Sugano diagram for a d° metal ion, such as Cr(III), is shown below. a. Why does it not have a vertical line in the middle of the diagram as we saw in the d T-S diagram? b. What would be the ground state in the T-S diagram for a d° metal ion? c. To which excited states are electronic transitions possible?

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2. The Tanabe-Sugano diagram for a dº metal ion, such as Cr(III), is shown below.
a. Why does it not have a vertical line in the middle of the diagram as we
saw in the dº T-S diagram?
b. What would be the ground state in the T-S diagram for a d³ metal ion?
c. To which excited states are electronic transitions possible?
d. In the UV-visible spectrum for [Cr(en),]Cl3, two peaks at 350 nm and 457
nm are observed. The transition to which excited state gives rise to the
peak at 457 nm?
e. In the UV-visible spectrum for [Cr(en)3]Cl3, two peaks at 350 nm and 457
nm are observed. The transition to which excited state gives rise to the
peak at 350 nm?
70
2A2
2A,
60 + ?D
50
AT2
* 40
2T2
30
'D
2p.
20
10 -
*A2
"F
2
3
A/B
The d3 TS diegrem is by ChemE 07f00 4 IDublie demeinl vie Wiki medie Cemm ens
Transcribed Image Text:2. The Tanabe-Sugano diagram for a dº metal ion, such as Cr(III), is shown below. a. Why does it not have a vertical line in the middle of the diagram as we saw in the dº T-S diagram? b. What would be the ground state in the T-S diagram for a d³ metal ion? c. To which excited states are electronic transitions possible? d. In the UV-visible spectrum for [Cr(en),]Cl3, two peaks at 350 nm and 457 nm are observed. The transition to which excited state gives rise to the peak at 457 nm? e. In the UV-visible spectrum for [Cr(en)3]Cl3, two peaks at 350 nm and 457 nm are observed. The transition to which excited state gives rise to the peak at 350 nm? 70 2A2 2A, 60 + ?D 50 AT2 * 40 2T2 30 'D 2p. 20 10 - *A2 "F 2 3 A/B The d3 TS diegrem is by ChemE 07f00 4 IDublie demeinl vie Wiki medie Cemm ens
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