6 Jun 2019

1FLO: Relating Electronic Spectra and Ligand Field Strength of [NiX4]2- Anions

In-Class Activity

Submitted by Wesley S. Farrell, United States Naval Academy
Categories
Description: 

This 1FLO asks students to interpret an electronic spectrum of 5 NiX42- anions.  Students will determine the relative ligand field strength, (re)familiarize themselves with terms such as "redshift" and "blueshift", and consider possible metal complex geometries.

AttachmentSize
File 1FLO Discussion Questions16.67 KB
Learning Goals: 
  1. Students (re)familiarize themselves with relationship between wavelength (λ) and wavenumber (cm-1).

  2. Students recall 4-coordinate geometries.

  3. Students define the terms “redshift” and “blueshift.”

  4. Students analyze data to construct a partial spectrochemical series.

Equipment needs: 

None

Implementation Notes: 

This activity could be used as either a guided introduction to the spectrochemical series, or as an in-class activity to review after introduction.  If used as an introduction, question 4 may need modification.

Time Required: 
15 - 20 Minutes
Evaluation
Evaluation Methods: 

Evaluate students' comprehension based on verbal in-class answers and ensuing discussion.

Evaluation Results: 

None yet available.

Creative Commons License: 
Creative Commons Licence

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