4. Dr raw resonance structures for each of the following compounds. Use curved arrows to show...
Draw a major resonance structure for the following enolate. Use curved arrows in both structures to show the delocalization of electron pairs. Include lone pairs of electrons, formal charges, and hydrogen atoms. Draw a major resonance structure for the following enolate. Use curved arrows in both structures to show the delocalization of electron pairs. Include lone pairs of electrons, formal charges, and hydrogen atoms.
4. Consider the molecule BF3. Two possible resonance structures are shown below. :: a) Use curved arrows to show electron movement. b) Assign formal charges to each resonance contributor. c) Are both structures equally contributing to the resonance hybrid? Which is the better structure and why?
4 and 5 PLEASE HELP curved arrows to indicate electron movement for each step. Draw all the resonance structures of the sigma complex intermediate. 4. (6 pts) a) Draw the complete mechanism to account for the following reaction. Make sure to show OCH3 Ords CI AICI 5. (6 pts) Draw the step-by-step mechanism for the reaction below, using curved arrows to show the flow of electrons and draw any resonance intermediates. Br Bг NO2 HNO3 H2SO4
6. (12 points total) Mechanism: Provide a detailed mechanism for the following reaction. Use curved arrows to show the movement of electrons. (Hint: Begin by drawing the resonance structure for the reagent over the arrow) from med arrows total) Mecha H2C=N=N O-H OCH3 NEN (gas) 7. (18 points total) Mechanism: Provide a detailed, stepwise mechanism for the following reaction. Use curved arrows to show the movement of electrons. O Me Me
28. (4 points) Use curved arrows to show the movement of pairs of electrons in the following acid-base reaction and show the structures of the conjugate acid and conjugate base 29. (4 points) Provide a brief explanation, based on features of the motecules,for the following trend in pKa values? 16 38 51 ANSWER 30. (4 points) Use curved arrows to show the movement of pairs of electrons in the following reaction between a Lewis acid and a Lewis base, and...
Draw the most important resonance structures for the following compounds. Remember to use the appropriate arrows in each step to indicate the movement of electrons. Ejercicios de práctica Dibuje las estructuras de resonancia más importantes para los siguientes compuestos. Recuerde utilizar las flechas adecuadas en cada paso para indicar el movimiento de electrones. NO2 5. NO2 NO2
3. Using curved arrows draw all the significant (not negligible) contributing resonance structures for the ions or molecules given below. (curved arrows must show how each proposed structure is generated) a) (5 points) b) (5 points) compond ОН n abom nl ( c) (5 points) 24
Write all possible contributing resonance structures for the following intermediates; show movement of electrons with arrows (0.5 point will be deducted for each missing or wrong arrow and 0.5 points will be deducted for each missing charge); label the most contributing resonance structure or write "equally contributing" if this is the case. (10 points): 1· a. b. С. Don't forget about lone pair of electrons on Br Br d. 03
Draw the mechanism for the following transformation. Include all relevant resonance structures. Show the movement of electrons with arrows. Draw the mechanism for the following transformation. Include all relevant resonance structures. Show the movement of electrons with arrows. (14 points) Pro excess HBr Br
1. Add curved arrows to both structures to show the delocalization of electron pairs needed to form the other resonance contributor. 2a.) Draw the predominant resonance contributor for the following compound; include lone pairs of electrons, formal charges, and hydrogen atoms. b) Add curved arrows to both structures to show the delocalization of electron pairs.