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quiz_4_key - CHEM 2211 Last name Quiz 4A First name UFID...

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Unformatted text preview: CHEM 2211 Last name: Quiz 4A First name: UFID: 1. (20 pts) The molecular orbital diagrams below are for 1,3—butadiene. Properly shade the given atomic orbitals to indicate how they will overlap and lead to the HOMO (shown on the left) and LUMO (shown on the right) molecular orbitals. Circle the orbital in which an electron would be added. Bartlet creel) -. 2. (30 pts) Show the two preferred 1,2-addition products for the reaction below (no stereochemistry required)- Place an "X" in the box under the major product. 3. (30 pts) Draw the products formed by the 1 ,2— and 1,4-addition for the reaction below in the corresponding boxes (no stereochemistry required). .. \0 i=1 wrong 540/ng Mir/roll wrong 12 addition 1,4 addition ranged— . - ' umzimmwflmunlniwmm :.'.::==.x MM“... ... l. 4. (20 pts) A conjugated PEDOP absorbs a 2.0 eV photon. In which region of the spectra does it absorb (UV, visible or IR) ? Show calculations for full credit. # . llho l2, 0 t(e\l\s .IZL'O ~———': )an3 ,_ , _ = w—LL. 5 EKG/rm Nam) . glad) 0.40 3/ 4—? “(35 M0?) WBWwao €235; 4:" [1, ngfi 4‘ 87 ’2) {Di Cali/upo-Mm WS )‘ — L4 gar wrung (Songhai— irS’ J3. wrong )\ amt $641k? Hoe 51%“ cormgoAAQA&V€fi—Nv\~ ...
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