12:27 LTE Done chy421f2017e2.pf (c) How many spin-allowed transitions would you

Question

12:27 LTE Done chy421f2017e2.pf (c) How many spin-allowed transitions would you predict for each compound? CoFs3 is expected to havetransitions Co(H2NCH CH2NH2)s is expected to havetransitions strong ligand field (a/B+ 25) and shows the following bands nits UV-visible spectrum: two bands with between 60 and 80 Mcm ii) one weak band with s]Mema ii) one strong band at higher energy with20,000 M cm Suggest the origins for the above transitions and explain how the selection rules can be used to support your assignments. Be as clear as you can in describing transitions. (Hint: the above Tanabe-Sugano diagram will be useful for problem too.

Explanation / Answer

c) 1 for CoF63- and 5 for Co(H2NCH2CH2NH2)33+

F- is a weak ligand and en is a strong ligand

There is only one excited state with the same spin multiplicity as CoF63-, whereas for Co(H2NCH2CH2NH2)33+ , there are 5.

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