2017 : Tuesday, March 14. at 8.12 and Thursday, March 16. at 10.15
(and the rest of the day partly in the lab with the copper assignment)
We start with Case study 2 Q14-17. (Who will enlighten us with the answers?)
The next approach for the next couple of weeks is the electronic structure and binding in coordination componds and what can be learned from that.
Study material. Chapter 20 (not sect. 20.2, 20.4, (in 20.6: not quantum numbers J and MJ and Russel Saunders coupling), 20.8 and 20.9; 20.10 only pages 699-701.
Program includes:
- More d-electrons in an octahedral field - first approximation:
- High and low spin in octahedral coordination compounds, magnetic properties
- Crystal Field Stabilisation Energy
- ionic size variations, Irwing Williams series
- The CFSE-contribution to stability (with Ni2+ - en as an example)
- Jahn-Teller distortion and square planar four coordination (related to Case study 1 Q8)
- Consider Case study 1, data for Cu2+: try to explain the irregularity in K's. Why does't logK3 follow the Irwing-Williams-"rule" in the same way as the two other K's do through the series of metal(II) ions?
- Also predict logK3 in the Cr2+ case.
- One d-electron in an octahedral and a tetragonal field (Results applied in cases of another symmetry)
- End of Chapter problems 20.3, 20.4, 20.5, 20.8, 20.11, 20.31
Introduction to Ligand field theory; the strong field approach.
Copper(II) - 1,2-ethanediamine assignment: (manual on Moodle or homepage) Thursday afternoon.
Prelab. Thursday at 11.15:
- Recapitulate Case study 1 Q2 and 3
- Look up data in the table for M = Cu. How could they have been determined?
- Also take a look at Case study 4 Q9.
- We will also go through how to understand and use the templates
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