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The indanyl cation: a real time observation
Author(s) -
Givehchi M.,
Polton A.,
Tardi M.,
Moreau M.,
Sigwalt P.,
Vairon J.P.
Publication year - 2000
Publication title -
macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 1022-1360
DOI - 10.1002/1521-3900(200007)157:1<77::aid-masy77>3.0.co;2-5
Subject(s) - indene , protonation , chemistry , monomer , dimer , polymerization , inorganic chemistry , deprotonation , yield (engineering) , polymer chemistry , photochemistry , medicinal chemistry , organic chemistry , ion , materials science , polymer , metallurgy
A stopped‐flow investigation by U.V. spectroscopy has been carried out using various reactions which yield the indanyl cation: polymerization of indene by trifluoromethane sulfonic acid (TfOH), ionization of 1‐chloroindane by antimony pentafluoride and protonation of a dimer of indene (2‐α‐indanyl indene) by TfOH, at variable temperature. The monomer and dimer cations present a main absorption at 318‐325 nm and the polyindene cation at 330 nm. A side reaction yields a derived cation, which absorbs at 519 nm. The molar absorbance of the indanyl cation has been estimated (ϵ=15 500 L.mol. −1 cm −1 ).