Lecture 31 (22.1-22.2)

Lecture 31 (22.1-22.2) - Which of the following complex...

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Unformatted text preview: Which of the following complex ions are chiral? 1. 2. 3. 4. 5. 6. 7. [Fe(C2O4)3]3[Co(NH3)4en]3+ [Co(NH3)2(en)2]3+ [Cr(H2O)4Cl2]+ Both 1 and 3 are chiral Both 2 and 4 are chiral All 4 are chiral 24% 22% 18% 12% 9% 13% 3% e( C2 [C O o( 4) 3] N [C H3 3o( )4 N H3 en] 3+ )2 (e [C n) B r(H ot 2] h 2O 3+ 1 an )4 B Cl d ot 2] 3 h ar + 2 e an ch d ira 4 ar l e A ch ll ira 4 ar l e ch ira l [F Localized Electron Model Crystal Field Model Crystal Field Model – a model used to explain the magnetism and colors of coordination complexes through the splitting of d orbitals. Crystal Field Model Strong-Field Case – a large difference in the energy between the sets of d orbitals Weak-Field Case – small difference in the energy between the sets of d orbitals Low-Spin Case – strong field case, smallest number of unpaired electrons High-Spin Case – weak field case, largest number of unpaired electrons Spectrochemical Series CN->NO2->en>NH3>H2O>OH->F->Cl->Br->I- Spectrochemical Series Crystal Field Model How many unpaired electrons are in the following complex ions? Ru(NH3)62+ (low-spin case) Ni(H2O)62+ V(en)3+ Crystal Field Model The complex ion Fe(CN)63- is paramagnetic with one unpaired electron. The complex ion Fe(SCN)63- has five unpaired electrons. Where does SCN- lie in the spectrochemical series relative to CN-? Rank the following complex ions in order of increasing wavelength of light absorbed. [Co(H2O)6]3+, [Co(CN)6]3-, [CoI6]3-, [Co(en)3]3+ Crystal Field Model Crystal Field Model ...
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This note was uploaded on 12/01/2011 for the course CHEM 105BL taught by Professor Warshel during the Spring '07 term at USC.

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Lecture 31 (22.1-22.2) - Which of the following complex...

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