Journal of Physical Chemistry p. 12609 - 12612 (1994)
Update date:2022-08-15
Topics:
Dix, Edward J.
Goodman, Joshua L.
Picosecond laser excitation of either di(p-chlorophenyl)- or di(p-methoxyphenyl)diazomethane generates a transient which we ascribe to the singlet states of di(p-chlorophenyl)- and di(p-methoxyphenyl)carbenes, 1a and 1b, respectively.Picosecond absorption spectroscopy is used to determine their kinetic behavior in various solvents.In the presence of alcohols, these carbenes are protonated, forming contact-ion pairs.These ion pairs partition between collapse to ether products and separation to free carbenium ions, 2a and 2b, which are readily observed.The dynamics of these ion pairs is discussed.Protonation of carbenes can provide an alternative method for the preparation of ion pairs and the investigation of their dynamics.
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Doi:10.1021/ja00099a022
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(1994)
