Tropylium tetrafluoroborate

Tropylium tetrafluoroborate
Names
Preferred IUPAC name
Cycloheptatrienylium tetrafluoroboranuide
Other names
Cycloheptatrienyl tetrafluoroborate
Identifiers
CAS Number
  • 27081-10-3 checkY
3D model (JSmol)
  • Interactive image
ChemSpider
  • 134784
ECHA InfoCard 100.043.816 Edit this at Wikidata
EC Number
  • 248-214-5
PubChem CID
  • 152926
UNII
  • DFS83J4CRL checkY
CompTox Dashboard (EPA)
  • DTXSID301068844 Edit this at Wikidata
InChI
  • InChI=1S/C7H7.BF4/c1-2-4-6-7-5-3-1;2-1(3,4)5/h1-7H;/q+1;-1
    Key: SQVQHTIKOZVGLR-UHFFFAOYSA-N
  • F[B-](F)(F)F.c1[cH+]ccccc1
Properties
Chemical formula
 [C7H7]+[BF4]−
Molar mass 177.94 g·mol−1
Appearance white solid
Melting point 200 °C (392 °F; 473 K) decomposition
Hazards
GHS labelling:
Pictograms
 GHS05: Corrosive
Danger
Hazard statements
 H314
Precautionary statements
 P260, P264, P280, P301+P330+P331, P303+P361+P353, P304+P340, P305+P351+P338, P310, P321, P363, P405, P501
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
Chemical compound

Tropylium tetrafluoroborate is an organic compound with the formula [C7H7]+[BF4]−. 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]

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

See also

References

  1. ^ a b 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. doi:10.1002/047084289X.rt429. ISBN 0-471-93623-5.
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Salts and covalent derivatives of the tetrafluoroborate ion
HBF4 He
LiBF4 Be B C7H7BF4
[Et3O]BF4
[Me3O]BF4
(FTEDA)BF4 		NOBF4
NO2BF4
NH4BF4 		O F Ne
NaBF4 Mg(BF4)2 Al Si P S Cl Ar
KBF4 Ca(BF4)2 Sc Ti V [Cr(MeCN)6](BF4)3
[Cr(MeCN)4](BF4)2 		Mn(BF4)2 Fe(BF4)2
FeO(BF4)2
[FeCp2]BF4 		Co(BF4)2 Ni(BF4)2
[Ni(MeCN)6](BF4)2 		Cu(BF4)2 Zn(BF4)2 Ga Ge As Se Br Kr
RbBF4 Sr(BF4)2 Y Zr Nb [Mo2(MeCN)8](BF4)4
[Mo2(MeCN)10](BF4)4 		[Tc2(MeCN)10](BF4)4 [Ru(MeCN)6](BF4)2 [Rh(MeCN)6](BF4)3
[Rh2(MeCN)10](BF4)4 		[Pd(MeCN)4](BF4)2 AgBF4 Cd(BF4)2 In(BF4)3 Sn(BF4)2 Sb Te (IPy2)BF4 Xe
CsBF4 Ba(BF4)2 * Lu Hf Ta W Re Os Ir Pt(BF4)2 Au Hg(BF4)2 TlBF4 Pb(BF4)2 Bi Po At Rn
Fr Ra ** Lr Rf Db Sg Bh Hs Mt Ds Rg Cn Nh Fl Mc Lv Ts Og
 
* La Ce Pr Nd Pm Sm Eu Gd Tb Dy Ho Er Tm Yb
** Ac Th Pa U Np Pu Am Cm Bk Cf Es Fm Md No