1. p. 751

2. Figure 18.1
Pyramidal inversion rapidly interconverts the two mirror-image (enantiomeric) forms of an amine. Go to this book’s student companion site at to explore an interactive version of this figure.
Fig. 18-1, p. 753

3. p. 753

4. Table 18-1, p. 755

5. p. 756

6. Figure 18.2
Arylamines have a larger positive ΔG° for protonation and are therefore less basic than alkylamines, primarily because of resonance stabilization of the ground state. Electrostatic potential maps show that lone-pair electron density is delocalized in the amine but the charge is localized in the corresponding ammonium ion.
Fig. 18-2, p. 757

7. Table 18-2, p. 758

8. p. 765

9. Traugott Sandmeyer Developed the Sandmeyer Reaction, 1884
Never obtained a degree in Chemistry

10. p. 766

11. p. 774

12. Purine bases Pyrimidine bases Adenine Thymine Guanine Cytosine
Figure 24.2
Hydrogen-bonding between base pairs in the DNA double helix. Electrostatic potential maps show that the faces of the bases are relatively neutral (green), while the edges have positive (blue) and negative (red) regions. Pairing G with C and A with T brings together oppositely charged regions. Go to this book’s student companion site at to explore an interactive version of this figure.
Guanine
Cytosine
Fig. 24-2, p. 991

13. p. 770

14. p. 770

15. p. 775

16. p. 772

17. Figure 18.5
IR spectrum of cyclohexylamine.
Fig. 18-5, p. 776