2. a) Determine the crystal field stabilization energy for octahedral d (10Dq:25,000 cm1 and P(the mean pairing energy): 15,000 cm-') and d? (10Dq:21,000 cm-l and P: 28,000 cm-1) systems.(Please draw crystal splitting field diagrams for following systems).b) Solutions of the complexes [CoL6]3+ and[COR6]3+, where L and R are two different neutralmonodentate ligands, are pink and yellow respectively. Which would be expected to have thehigher value of Ao and stability? Explain.c) Explain why aqueous solutions of [MnO4] are purple whereas those of [ReO4] are colorless.

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2. a) Determine the crystal field stabilization energy for octahedral d (10Dq:25,000 cm-1 and P (the mean pairing energy): 15,000 cm-') and d7 (10Dq:21,000 cm-1 and P: 28,000 cm-1) systems. (Please draw crystal splitting field diagrams for following systems).

2. a) Determine the crystal field stabilization energy for octahedral d (10Dq:25,000 cm-1 and P (the mean pairing energy): 15,000 cm-') and d7 (10Dq:21,000 cm-1 and P: 28,000 cm-1) systems. (Please draw crystal splitting field diagrams for following systems).

Appl Of Ms Excel In Analytical Chemistry

2nd Edition

ISBN:9781285686691

Author:Crouch

Publisher:Crouch

Chapter12: Spectrochemical Methods

Section: Chapter Questions

Problem 13P

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Question

2. a) Determine the crystal field stabilization energy for octahedral d (10Dq:25,000 cm1 and P
(the mean pairing energy): 15,000 cm-') and d? (10Dq:21,000 cm-l and P: 28,000 cm-1) systems.
(Please draw crystal splitting field diagrams for following systems).
b) Solutions of the complexes [CoL6]3+ and[COR6]3+, where L and R are two different neutral
monodentate ligands, are pink and yellow respectively. Which would be expected to have the
higher value of Ao and stability? Explain.
c) Explain why aqueous solutions of [MnO4] are purple whereas those of [ReO4] are colorless.

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