a) Identify the ground terms for Fe2+ in the case of free ion and octahedral complexes; [Fe(H₂O)6]²+ and [Fe(CN)6]+. b) Write all spin-allowed transitions with their energy terms for the complexes using Tanabe-Sugano diagram. c) The absorption spectrum of [Fe(H2O)6]²* shows a maximum at 1000 nm with a shoulder at 1250 nm. Estimate the value of A, for [Fe(H2O)6]2+ in cm³¹ unit and determine the transition responsible for this shoulder. d) Give a comparison on the color of the complexes.

a) Identify the ground terms for Fe2+ in the case of free ion and octahedral complexes; [Fe(H₂O)6]²+ and [Fe(CN)6]+. b) Write all spin-allowed transitions with their energy terms for the complexes using Tanabe-Sugano diagram. c) The absorption spectrum of [Fe(H2O)6]²* shows a maximum at 1000 nm with a shoulder at 1250 nm. Estimate the value of A, for [Fe(H2O)6]2+ in cm³¹ unit and determine the transition responsible for this shoulder. d) Give a comparison on the color of the complexes.

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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Question

a) Identify the ground terms for Fe²* in the case of free ion and octahedral complexes; [Fe(H2O)6]²* and
[Fe(CN)6]+.
b) Write all spin-allowed transitions with their energy terms for the complexes using Tanabe-Sugano
diagram.
c) The absorption spectrum of [Fe(H2O)6]²* shows a maximum at 1000 nm with a shoulder at 1250 nm.
Estimate the value of A, for [Fe(H2O)«]?+ in cm' unit and determine the transition responsible for this
shoulder.
d) Give a comparison on the color of the complexes.

'E
'G
3E
70
60
50
'F
ST2
'D
's
3T2
30
20
10
3
2
Δ/B
1
4)
8/3

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