Concept explainers
Interpretation:
The complete MO picture and energy diagram for the allyl anion
Concept introduction:
The overlap of the two atomic orbitals (AOs) results in the formation of two molecular orbitals (MOs). One of these, called the bonding MO, is formed as a result of constructive interaction. It is lower in energy than the original AOs. The other, called the antibonding MO, is formed as a result of destructive interaction. It is higher in energy than the original AOs. Antibonding MOs have a node (a nodal plane) situated between the two atoms. The overall character of the MO is determined by the number of bonding and antibonding interactions between the AOs. If the bonding interactions are more, the overall character is bonding. If the antibonding interactions are more, the overall character is antibonding. If they are equal or there are none, the MO is nonbonding.
Depending on whether the AOs overlap along the bond axis or away from the bond axis (sideways), the MOs are designated as
In a molecule with double bonds, all bonding
For a linear system of conjugated p orbitals, all nodal planes in a resulting
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ORGANIC CHEMISTRY E-BOOK W/SMARTWORK5
- give an energy diagram for the cyclopropenyl MOs. (The polygon rule is helpful.)Label each MO as bonding, nonbonding, or antibonding, and add the nonbonding line.Notice that it goes through the approximate average of the MOs.(c) Add electrons to your energy diagram to show the configuration of the cyclopropenylcation and the cyclopropenyl anion. Which is aromatic and which is antiaromatic?arrow_forwardHelp,please provide explanation! (a) Draw the orbital picture for diazomethane (shown below) showing the explicit overlap of the contributing AO's. (b) Draw the MO energy diagram for diazomethane and identify the HOMO and LUMO.arrow_forwardPlease draw the arrow formalism on the 1st structure (top) that accounts for the 2nd resonance structure (bottom).arrow_forward
- assign R and S for fisher projection and show assigned priorities as well as bond lines. Thank you in advance!arrow_forwardPlease answer this asap.. you can see the example on the other picture Instruction: Identify the hybrid orbitals used in the given moleculesarrow_forwardFor molecule showed on the rightdraw the structure of 3 different conjugated basesbased on 3 different types of hydrogen which could be deprotonated (CH3, and two different CH2groups). For each structure of conjugate base draw all possible resonance structuresand finally rank all 3 C-H bonds in order of increasing their acidity.arrow_forward
- What information (if any) from the following energy diagram confirms your answer to theprevious question?arrow_forwarda.Determine the number of nodes and rank them in order of increasing energy. b.Draw the p atomic orbital contributions on each carbon atom (AO mixing pattern) that would give rise to the MO. c. Based on your answer to part (c) -determine whether each MO is overall bonding, nonbonding, or antibonding. Please explain stepsarrow_forwardFor 1 and 2, draw the appropriate arrows to show the bond cleavage and bond formations in these reactions. Show the important nonbonding electrons.arrow_forward
- Draw a bond-line structure that best matches the given 3D representation?arrow_forwardDraw an exact 3-D representation of the molecule from the model. Please must mention: valency electron, molecular geometryarrow_forwardBelow is the SN2 reaction between iodocyclohexane and cyanide (CN–). Draw the missing curved arrow notation in the first box to reflect electron movements. In both boxes, add lone pairs of electrons and nonzero formal charges.arrow_forward
- Organic Chemistry: A Guided InquiryChemistryISBN:9780618974122Author:Andrei StraumanisPublisher:Cengage Learning