Tropylium tetrafluoroborate

Tropylium tetrafluoroborate is an organic compound with the formula C7H7BF4. Containing the tropylium cation and the non-coordinating tetrafluoroborate counteranion, tropylium tetrafluoroborate is a rare example of a readily isolable carbocation. It is a white solid.[1]

Tropylium tetrafluoroborate
Names
Other names
cycloheptatrienyl tetrafluoroborate
Identifiers
3D model (JSmol)
ChemSpider
ECHA InfoCard 100.043.816
Properties
C7H7BF4
Molar mass 177.94 g·mol−1
Appearance white solid
Melting point 200 °C (392 °F; 473 K) decomposition
Related compounds
Other anions
Tetrafluoroborate
Other cations
Tropylium
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references

This compound may be prepared by the reaction of cycloheptatriene with phosphorus trichloride, followed by tetrafluoroboric acid.[1][2]

See also

References

  1. Kenneth Conrow (1963). "Tropylium Tetrafluoroborate". Org. Synth. 43: 101. doi:10.15227/orgsyn.043.0101.
  2. Kane, John L.; Danheiser, Rick L. (2001). "Tropylium Tetrafluoroborate". Encyclopedia of Reagents for Organic Synthesis. Encyclopedia of Reagents for Organic Synthesis. doi:10.1002/047084289X.rt429. ISBN 0-471-93623-5.
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