Concept explainers
Interpretation:
The complete MO energy diagram for butadienyl dication
Concept introduction:
MOs arise from interacting AOs on different atoms. The number of MOs formed must equal the number of contributing AOs. MO energies differ as a result of constructive and destructive interference among contributing AOs. For a linear system of conjugated p orbitals, all nodal planes in a resulting
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ORGANIC CHEMISTRY E-BOOK W/SMARTWORK5
- Consider the Newman projection below. a. Draw a full Lewis structure of this molecule with R1=Me,R2=Et , and R3=iPr . b. Given the sizes of these R groups (R3R2R1) , does the Newman projection above show thelowest potential energy conformation of this bond? If not, draw a Newman projectionshowing the lowest P.E. conformation (sighting down this same bond). c. To draw a Newman projection in the lowest P.E. conformation, the following rule of thumbusually applies: Place the largest group on the front carbon anti to the largest group on theback carbon. Is your answer to the previous question consistent with this rule of thumb?arrow_forwardAnswer the following questions for 1,3,5- hexatriene, the conjugated triene containing six carbons.Which MOs are bonding? Which are antibonding?arrow_forwardX, the molecule shown below, is not planar. The terminal ring at one end is actually skewed up relative to that at the other end. Is X chiral? Yes or no?arrow_forward
- Determine the configuration (E or Z) of each of the following alkenes..arrow_forwardthe stereo center in this molecule is ___. a. R b. Sarrow_forwardDraw How this molecule reacts with Br2 Then identify halogenated product Then in mono halogenation product, determine r/s configuration as well as labeling products being chiral or achiralarrow_forward
- Draw an exact 3-D representation of the molecule from the model. Please must mention: valency electron, molecular geometryarrow_forwardDraw the energy diagram for cyclooctatetraene dianion , C8H8 (2-) , molecular orbitals. The polygon rule is helpful. Label each MO as bonding , antibonding, or nonbonding, and add the nonbonding line. Identify the LOMO, HOMO, LUMO and HUMO orbitals. Is this dianion aromatic , non aromatic or anti aromatic? Thank you!arrow_forwardConsider the molecule 1-bromo-2-methylbutane. C3 and C4 should be drawn as Et as in theexample. This group is called an ethyl group and can be considered a sphere about twice the sizeof a methyl group. Draw the following Newman projections sighting down the C1C2 bond... a. The lowest potential energy conformation. b. The highest potential energy staggered conformation.arrow_forward
- Build a model of methylcyclohexane, and use the model to complete the following Newmanprojections of methylcyclohexane in the chair conformation: a. When the methyl group is in an axial or equatorial (circle one) position, the molecule is inits lowest potential energy conformation. b. Label one Newman projection above anti and the other gauche to describe the relationshipbetween the methyl group and C3 of the ring. c. In general, which is a lower PE conformation, anti or gauche? d. Explain how your answer to b and c provide an explanation for why it is more favorable fora large group to be in an equatorial than an axial position.arrow_forwardDraw an exact 3-D representation of the molecule from the model. please answer all question step by step. Answer follow image: Please must mention: valency electron, molecular geometry handwritten answerarrow_forwardDraw just the bonding p-MO’s for the cycloheptatrienyl cation. Draw the energy diagram to show the relative energies of all the MO’s, and show which orbitals the electrons would occupy in the ground state. Predict whether this ion is aromatic, antiaromatic, or nonaromatic.arrow_forward
- Organic Chemistry: A Guided InquiryChemistryISBN:9780618974122Author:Andrei StraumanisPublisher:Cengage Learning