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3. Ridge, J. Am. Chem. Soc., 1979, 101, 4998
4. Traeger, J. Am. Chem. Soc., 1979, 101, 5791
5. Kebarle, J. Am. Chem. Soc., 1979, 101, 1084
6. Beauchamp, J. Am. Chem. Soc., 1979, 101, 1239
7. Trager, J. Am. Chem. Soc., 1981, 103, 3647
8. Ausloos, J. Am. Chem. Soc., 1980, 102, 2540.

Enthalpies of Reaction in Hyperacid Media

1. Arnett and Hofelich, J. Am. Chem. Soc., 1983, 105, 2889
2. Arnett, Petro, and Schleyer, J. Am. Chem. Soc., 1979, 101, 522

¹³C Spectra of Carbocations

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2. Spiescecke and Schneider, Tetrahedron Lett., 1961, 468.
3. Olah and Mateescu, J. Am. Chem. Soc., 1970, 92, 1430
4. Olah and White, J. Am. Chem. Soc., 1969, 91, 3954
5. Hoffmann, J. Chem. Phys., 1964, 40, 2480

Ethyl Carbocation

1. Raghavachari, Whiteside, Pople, and Schleyer, J. Am. Chem. Soc., 1981, 103, 5649
2. Ausloos, Rebbert, Sieck, and Tiernan, J. Am. Chem. Soc., 1972, 94, 8939

Cyclopentyl Carbocation

1. Schleyer, Carneiro, Koch, and Raghavachari, J. Am. Chem. Soc., 1989, 111, 5475
2. Olah, "Carbocations and Electrophilic Reactions", John Wiley and Sons, New York, 1974; p. 78
3. Saunders and Kates, J. Am. Chem. Soc., 1978, 100, 7082

2-Butyl Carbocation

1. Carneiro, Schleyer, Koch, and Raghavachari, J. Am. Chem. Soc., 1990, 112, 4064
2. Clark and Harrison, Chem. Phys. Lett., 1981, 82, 143
3. Saunders, Hagen, and Rosenfeld, J. Am. Chem. Soc., 1968, 90, 6882

Norboryl Carbocation

1. Myhre, Webb, and Yannoni, J. Am. Chem. Soc., 1990, 112, 8991
2. Johnson and Clark, J. Am. Chem. Soc., 1988, 110, 4112
3. Schleyer and Sieber, Angew. Chem. Int. Ed., 1993, 32, 1606

The Benzyl to Tropylium Rearrangement

1. Rylander and Meyerson, J. Am. Chem. Soc., 1956, 78, 5799
2. Rylander, Meyerson, and Grubb, J. Am. Chem. Soc., 1957, 79, 842
3. Meyerson and Rylander, J. Chem. Phys., 1957, 27, 901
4. Meyerson, Rylander, Eliel, and McCollum, J. Am. Chem. Soc., 1959, 81, 2606
5. Pottie and Lossing, J. Am. Chem. Soc., 1961, 83, 2634