Answered: Draw the molecular orbital energy…

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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Question

Draw the molecular orbital energy diagram (like we did in class, not the fancy general chemistry diagrams) for the bond between the nitrogen atom labeled a and the carbon atom labeled b in the following molecule. Clearly indicate which atomic orbitals are interacting, which resulting orbital the electrons are in, and label HOMO, LUMO, bonding and antibonding orbitals, and sigma (o), sigma* (o*), pi (n), and pi* (7*) where appropriate.

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Step 1

In the given compound, NH₃ acts as the nucleophile in which the HUMO is nonbonding n orbitals. The electrophile is the alkyne, $HC \equiv CH$ in which the LUMO is pi* orbital. The interaction of HOMO of NH3 and LUMO of $HC \equiv CH$ forms the sigma bond between N and C.

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