Tropylium Bromide
Title: Tropylium Bromide
CAS Registry Number: 5376-03-4
CAS Name: Cycloheptatrienylium bromide
Additional Names: cycloheptatrienocarbonium bromide
Molecular Formula: C7H7Br
Molecular Weight: 171.03
Percent Composition: C 49.16%, H 4.13%, Br 46.72%
Literature References: Prepd by bromination of 1,3,5-cycloheptatriene in carbon tetrachloride, followed by removal of the CCl4 and heating the residue in vacuo for several days: von Doering, Knox, J. Am. Chem. Soc. 79, 352 (1957); King, Stone, Inorg. Synth. 7, 99 (1963).
Properties: Yellow prisms from ethanol, mp 203°. Freely sol in water. Practically insol in ether.
Melting point: mp 203°

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