Concept explainers
(a)
Interpretation:
The bond length of the indicated
Concept introduction:
Weak resonance contributors give some single-bond character to the two terminal
Answer to Problem 14.33P
In
Explanation of Solution
The bond length of
The normal
The amount of shortening of
(b)
Interpretation:
The bond length of the indicated
Concept introduction:
Resonance contributors give some double-bond character to the
Answer to Problem 14.33P
The occupied
Explanation of Solution
The bond length of
The occupied
Out of these, the occupied
The occupied
(c)
Interpretation:
The bond length of the indicated
Concept introduction:
The highest energy MO of
Answer to Problem 14.33P
If an electron were promoted from the HOMO to the LUMO, the length of the
Explanation of Solution
The
If an electron is promoted from HOMO (
Therefore, the removal of an electron from the HOMO contributes to a shorter C2-C3 bond.
If an electron were promoted from the HOMO to the LUMO, the length of the
Want to see more full solutions like this?
Chapter 14 Solutions
EBK GET READY FOR ORGANIC CHEMISTRY
- Draw the shapes of the following molecules and ions in 3-dimension. Show clearly any lone pairs of electrons on the central atom, state the number of bond pairs and lone pairs of electrons on the central atom and name the shape of the molecule or ion. (a) CH3+, methyl carbocation (b) HOBr, bromic (I) acid (c) NCl3, nitrogen trichloride Provide everything stated in the instructions for each compound.arrow_forwardQ. 9a) Provide additional resonance structures for the following species. Remember to show lone pairs & formal charges where applicable + [ :N=N-F: +→ [:0-C!-O: → Q. 9b) Draw the Lewis Structure for NCCH2CO2NHCH3, determine the number of sigma bonds & the number of pi bonds present, and indicate the bond angle value around each carbon atom, each nitrogen atom, and each oxygen atom.arrow_forward4. (i) On the structure below, add all missing lone pairs of electrons, assuming that all of the formal charges are correct. (ii) Draw line-angle structures for all resonance forms (including minor, but still significant) using appropriate notation, including double-headed resonance arrows and curved arrows for electrons. (Hint: Draw two more) (iii) Rank the three structures from most =1 to least =3 important.arrow_forward
- Using a table of average bond enthalpies. Table 6.2 ( Sec. 6-6b), estimate the enthalpy change for the industrial synthesis of methanol by the catalyzed reaction of carbon monoxide with hydrogen.arrow_forwardGive the approximate values for the indicated bond angles inthe following molecules:arrow_forwardThiocyanic acid (HSCN) is an inorganic acid (pKa = 1.1 at 25 °C) that can be classified as “strong” largely due to resonance stabilization of its conjugate base, thiocyanate (SCN– ). In the space provided below, draw Lewis electron dot structures of SCN- and all of its important resonance forms.arrow_forward
- For each of the following covalent bonds: (a) use the symbols δ+ and δ- to indicate the direction of polarity (if any).(a) C-F; (b) N-Br; (c) B-C; (d) Si-H(b) Rank the following covalent bonds in order of increasing polarity. (i) C-H, O-H, N-H; (ii) C-N, C-O, B-O; (iii) C-P, C-S, C-Narrow_forwardDraw the shapes of the following molecules and ions in 3-dimension. Show clearly any lone pairs of electrons on the central atom, state the number of bond pairs and lone pairs of electrons on the central atom and name the shape of the molecule or ion. (a) AIH4-, aluminium hydride ion (b) CH3-, methyl carbanion (c) POCl3, phosphorus oxychloride Provide everything stated in the instructions for each compound.arrow_forwardIm practicing drawing resonance structures. Can someone explain why this carbon's formal charge becomes negative? I calculated the formal charge to be: (ve-)-(bonds + dots) : 4- ( 2+2)= 0, so I'm confused .arrow_forward
- Chemistry: The Molecular ScienceChemistryISBN:9781285199047Author:John W. Moore, Conrad L. StanitskiPublisher:Cengage LearningChemistryChemistryISBN:9781305957404Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCostePublisher:Cengage Learning
- Chemistry: An Atoms First ApproachChemistryISBN:9781305079243Author:Steven S. Zumdahl, Susan A. ZumdahlPublisher:Cengage Learning