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Enantiomers of cobalt complexes Rate Topic: ***-- 2 Votes

#1 15 December 2011 - 02:31 PM ajpeeb 


Lepton
Hi I am new to this so not sure if this is the right place to post just a quick question-

I have made the two enantiomers of tris(ethytlenediamine)cobalt(III) tri-iodide. I have then taken the two UV-vis spectra of the two complexes and also the racemic mixture. All 3 absorbed at roughly 460nm but showed different absorbance- the l enantiomer showed highest absorbance and the d enantiomer showed lowest with the racemic mixture falling directly between the two. Can anyone explain why two enantiomers would show a different absorbance - (and therefore a different molar extinction coefficient)?

Thanks
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