d6 high spin Tanabe-Sugano diagram
A Tanabe-Sugano diagram of some spin-allowed and forbidden transitions for high spin octahedral d
6
complexes is given below.
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spin-allowed transitions
SOLID LINES
5
E
g
(D) ←
5
T
2g
Red
spin-forbidden transitions
dotted lines
1
T
1g
(I) ←
5
T
2g
Dk green
1
A
1g
(I) ←
5
T
2g
Purple
3
T
2g
(F) ←
5
T
2g
Blue
3
E
g
(H) ←
5
T
2g
Gray
3
T
1g
(H) ←
5
T
2g
Lt green
3
T
2g
(H) ←
5
T
2g
Orange
3
T
1g
(H) ←
5
T
2g
Teal
Select the region of interest (usually between 0-18 Δ /B) then click on the curve to get values. See the
instructions
for more information.
For the d
6
high spin case, the ground term is
5
T
2g
which is plotted along the X-axis. The only spin-allowed transition is to the
5
E
g
level which is the red line.
The low-energy spin-forbidden transitions arising from the
3
H,
3
F and
1
I terms are shown as well (teal, orange, gray, gold, blue, purple and light green).
If the spin-allowed energy Peak 1 is at
cm
-1
and the ratio of the energies (νf3 {T1g(H)}/ν1) is
then
to find where this ratio falls on the Tanabe-Sugano diagram and get the predicted value of B' and the energy of the transitions.
Initial output is:
....please enter the data above
From this a JCAMP-DX file can be created suitable for plotting with MDL CHIME
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Copyright © 2013 by Robert John Lancashire, all rights reserved.
Created and maintained by
Prof. Robert J. Lancashire
,
The Department of Chemistry, University of the West Indies,
Mona Campus, Kingston 7, Jamaica.
Created Dec 2003. Links checked and/or last modified 2nd June 2013.
URL http://wwwchem.uwimona.edu.jm/courses/Tanabe-Sugano/TanSugd6hs.html
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