Chapter 9: Problem 42
Sketch the molecular orbital and label its type ( \(\sigma\) or \(\pi ;\) bonding or antibonding) that would be formed when the following atomic orbitals overlap. Explain your labels.
Chapter 9: Problem 42
Sketch the molecular orbital and label its type ( \(\sigma\) or \(\pi ;\) bonding or antibonding) that would be formed when the following atomic orbitals overlap. Explain your labels.
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Get started for freeCarbon monoxide (CO) forms bonds to a variety of metals and metal ions. Its ability to bond to iron in hemoglobin is the reason that \(\mathrm{CO}\) is so toxic. The bond carbon monoxide forms to metals is through the carbon atom: \(\mathrm{M}-\mathrm{C}=\mathrm{O}\) a. On the basis of electronegativities, would you expect the carbon atom or the oxygen atom to form bonds to metals? b. Assign formal charges to the atoms in CO. Which atom would you expect to bond to a metal on this basis? c. In the MO model, bonding MOs place more electron density near the more electronegative atom. (See the HF molecule in Figs. \(9.42\) and \(9.43\).) Antibonding MOs place more. electron density near the less electronegative atom in the diatomic molecule. Use the MO model to predict which atom of carbon monoxide should form bonds to metals.
Use the localized electron model to describe the bonding in \(\mathrm{CCl}_{4} .\)
For each of the following molecules, write the Lewis structure(s), predict the molecular structure (including bond angles), give the expected hybrid orbitals on the central atom, and predict the overall polarity. a. \(\mathrm{CF}_{4}\) e. \(\mathrm{BeH}_{2}\) i. \(\mathrm{KrF}_{4}\) b. \(\mathrm{NF}_{3}\) f. \(\mathrm{TeF}_{4}\) j. \(\mathrm{SeF}_{6}\) c. \(\mathrm{OF}_{2}\) g. AsF \(_{5}\) k. IFs d. \(\mathrm{BF}_{3}\) h. \(\mathrm{KrF}_{2}\) L. \(\mathrm{IF}_{3}\)
Show how a hydrogen \(1 s\) atomic orbital and a fluorine \(2 p\) atomic orbital overlap to form bonding and antibonding molecular orbitals in the hydrogen fluoride molecule. Are these molecular orbitals \(\sigma\) or \(\pi\) molecular orbitals?
Describe the bonding in \(\mathrm{NO}^{+}, \mathrm{NO}^{-}\), and NO using both the localized electron and molecular orbital models. Account for any discrepancies between the two models.
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