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33750088148
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The Ohio State University spectrometer is described in the following
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The Ohio State University spectrometer is described in the following: Burdzinski, G. T.; Hackett, J. C.; Wang, J.; Gustafson, T. L.; Hadad, C. M.; Platz, M. S. J. Am. Chem. Soc. 2006, 128, 13402.
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Gustafson, T.L.4
Hadad, C.M.5
Platz, M.S.6
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5
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33845917796
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Details of the Rutgers spectrometer are given in the Supporting Information
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Details of the Rutgers spectrometer are given in the Supporting Information.
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6
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0001524770
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Gould, I. R.; Turro, N. J.; Butcher, J., Jr.; Doubleday, C., Jr.; Hacker, N. P.; Lehr, G. F.; Moss, R. A.; Cox, D. P.; Guo, W.; Munjal, R. C.; Perez, L. A.; Fedorynski, M. Tetrahedron 1985, 41, 1587.
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In acetonitrile, the ratio of fast/slow transient decay increases from fluoro-to chloro- to bromophenyldiazirine, hence the decay of the fluoro compound alone appears to be substantially monoexponential. The shape of the transient spectra obtained by excitation of the arylhalodiazirines does not change with time, consistent with the presence of a single absorbing intermediate in each system. Control experiments with all three halophenyldiazirine.s reveal that ultrafast photolysis (270 nm) of acetonitrile solutions of arylhalodiazirines, previously bleached by exposure to 266 nm radiation, does not produce the same transients observed by photolysis of fresh solutions of the diazirines. This demonstrates that the initially observed transients for the studied diazirines are not formed by re-excitation of stable reaction products
-
In acetonitrile, the ratio of fast/slow transient decay increases from fluoro-to chloro- to bromophenyldiazirine, hence the decay of the fluoro compound alone appears to be substantially monoexponential. The shape of the transient spectra obtained by excitation of the arylhalodiazirines does not change with time, consistent with the presence of a single absorbing intermediate in each system. Control experiments with all three halophenyldiazirine.s reveal that ultrafast photolysis (270 nm) of acetonitrile solutions of arylhalodiazirines, previously bleached by exposure to 266 nm radiation, does not produce the same transients observed by photolysis of fresh solutions of the diazirines. This demonstrates that the initially observed transients for the studied diazirines are not formed by re-excitation of stable reaction products.
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13
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33845917041
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The picosecond growth of transient absorption is only observed with bromophenylcarbene because it has the longest wavelength absorption Figure S9, 6 and we are now monitoring the center of the band
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6 and we are now monitoring the center of the band.
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14
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