

Draw the orbital diagram for cyclopentadienyl anion (see below for structure) and identify the HOMO and LUMO? Extra Credit: Is this molecule aromatic, anti-aromatic or nonaromatic? (5 pts) NOTE: Complete your work on a separate sheet of paper. Write your answer for the extra credit on the sheet as well. Take a picture
1. Draw the allyl anion molecular orbital diagram. How many electrons are in the HOMO of the allylic anion has how many electrons in its ground state?
below. Circle the chiral atoms (3 pts) на н н я сн, HENCH o " CO, 11) Assign Ror Sconfigurations to the following structures. (3 pts) OH - co_h ÇOCH нсон H нс co₂H NH NH₂
How many electrons occupy the HOMO in the molecular orbital diagram for the cyclobutadiene anion (-1 charge) OA. 2 OB.1 C.O OD. 3 Reset Selection Question 6 of 10 1 Points How many rxn steps are in a Diels-Alder reaction? O A. 1 OB. 3 C. 2 Reset Selection
6. Is the thermal (3+2) cycloaddition between allyl anion and ethylene to give the cyclopentyl carbanion, shown below, a thermally allowed or forbidden reaction? To answer, draw the molecular orbitals for HOMO of the ally! anion and LUMO of ethylene and clearly orient the orbitals in such a way that the orbital interactions are clear. Label the two key orbital interactions as bonding (in-phase) or antibonding (out of phase). (11 pts) G
1. Circle the one radical species below that is least thermodynamically stable. (3 pts.) Н. н" 2. Draw the structure of the major product afforded from the reaction conditions below in the box provided. (5 pts.) do HBr, H202 3. Provide the IUPAC name for the molecule below. (4 pts.) IUPAC name: 4. The AH° of any initiation step in a radical halogenation mechanism is... (3 pts.) 1) endothermic II) exothermic III) isothermic IV) isobestic V) neutral
Define the following terms: 1. Cation 2. Anion 3. Halide 4. Group 5. Period
1. Provide the products for the following reactions (1 points). NaOH, Ethanol н 2. Draw the mechanism for the reaction above (2 points). 3. Draw the 1H-NMR for the structure below. Label each peak on the NMR (2 points): G AM O 5 0
Part B (2 of 2) Draw the curved arrows for Step 5 of this mechanism. Arrow-pushing Instructions no-xm НА Н 0: Step 5 CH3 CH3 نی IÓ I H3C CH3 H I- Η :0: Ι Η CH3 H3C Hgc H Η I- Part B (2 of 2) Draw the curved arrows for Step 5 of this mechanism. Arrow-pushing Instructions ООС Хm HzC CH3 Н- CH3 HẠC н—с CHỊ CH3 Step 5 НАС H3C :0 —н. :0-н
Draw Step 2 of the mechanism with each resonance form below. Resonance structure 1: н Edit CH, + нс нс Resonance structure 2: CH, dy Edit CH, нс CH, н,с