-
3
-
-
0000566377
-
-
(a) Conrad, M. P.; Pitzer, R. M.; Schaefer, H. F., III. J. Am. Chem. Soc. 1979, 101, 2245.
-
(1979)
J. Am. Chem. Soc.
, vol.101
, pp. 2245
-
-
Conrad, M.P.1
Pitzer, R.M.2
Schaefer III, H.F.3
-
4
-
-
33751391370
-
-
(b) Sherrill, C. D.; Seidl, E. T.; Schaefer, H. F., III. J. Phys. Chem. 1992, 96, 3712.
-
(1992)
J. Phys. Chem.
, vol.96
, pp. 3712
-
-
Sherrill, C.D.1
Seidl, E.T.2
Schaefer III, H.F.3
-
5
-
-
0001098917
-
-
Xu, J. D.; Hrovat, D. A.; Borden, W. T. J. Am. Chem. Soc. 1994, 116, 5425.
-
(1994)
J. Am. Chem. Soc.
, vol.116
, pp. 5425
-
-
Xu, J.D.1
Hrovat, D.A.2
Borden, W.T.3
-
6
-
-
0032573866
-
-
Adam, W.; Borden, W. T.; Burda, C.; Foster, H.; Heidenfelder, T.; Heubes, M.; Hrovat, D. A.; Kita, F.; Lewis, S. B.; Scheutzow, D.; Wirz, J. J. Am. Chem. Soc. 1998, 120, 593.
-
(1998)
J. Am. Chem. Soc.
, vol.120
, pp. 593
-
-
Adam, W.1
Borden, W.T.2
Burda, C.3
Foster, H.4
Heidenfelder, T.5
Heubes, M.6
Hrovat, D.A.7
Kita, F.8
Lewis, S.B.9
Scheutzow, D.10
Wirz, J.11
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7
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33645791234
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note
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The experiments were actually performed on 3,3-difluoro-2,4-diphenyl- bicyclo[3,3,0]octan-2,4,-diyl. Subsequent experiments showed 3,3-dialkoxy derivatives of this diyl also have singlet ground states.
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8
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0034620683
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-
(a) Abe, M.; Adam, W.; Heidenfelder, T.; Nau, W. M.; Zhang, X. J. Am. Chem. Soc. 2000, 122, 2019.
-
(2000)
J. Am. Chem. Soc.
, vol.122
, pp. 2019
-
-
Abe, M.1
Adam, W.2
Heidenfelder, T.3
Nau, W.M.4
Zhang, X.5
-
9
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-
0037067101
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-
(b) Abe, M.; Adam, W.; Hara, M.; Hattori, M.; Majima, T.; Nojima, M.; Taschibana, K.; Tojo, S. J. Am. Chem. Soc. 2002, 124, 6540.
-
(2002)
J. Am. Chem. Soc.
, vol.124
, pp. 6540
-
-
Abe, M.1
Adam, W.2
Hara, M.3
Hattori, M.4
Majima, T.5
Nojima, M.6
Taschibana, K.7
Tojo, S.8
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10
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0347087236
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Abe, M.; Adam, W.; Borden, W. T.; Hattori, M.; Hrovat, D. A.; Nojima, M.; Nozaki, K.; Wirz, J. J. Am. Chem. Soc. 2004, 126, 574.
-
(2004)
J. Am. Chem. Soc.
, vol.126
, pp. 574
-
-
Abe, M.1
Adam, W.2
Borden, W.T.3
Hattori, M.4
Hrovat, D.A.5
Nojima, M.6
Nozaki, K.7
Wirz, J.8
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11
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0142043050
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Reviews: (a) Getty, S. J.; Hrovat, D. A.; Xu, J. D.; Barker, S. A.; Borden, W. T. J. Chem. Soc., Faraday Trans. 1994, 90, 1689.
-
(1994)
J. Chem. Soc., Faraday Trans.
, vol.90
, pp. 1689
-
-
Getty, S.J.1
Hrovat, D.A.2
Xu, J.D.3
Barker, S.A.4
Borden, W.T.5
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14
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33645760670
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in press. We thank Professor Lemal for informing us of his results and providing us with a preprint of his manuscript
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Wei, Y.; Liu, Y.; Wong, T.; Lemal, D. M. J. Fluorine Chem., in press. We thank Professor Lemal for informing us of his results and providing us with a preprint of his manuscript.
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J. Fluorine Chem.
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Wei, Y.1
Liu, Y.2
Wong, T.3
Lemal, D.M.4
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15
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0346731129
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Many other reviews of fluorocarbon chemistry have been written, and they are cited in this review
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Review: Lemal, D. M. J. Org. Chem. 2004, 69, 1. Many other reviews of fluorocarbon chemistry have been written, and they are cited in this review.
-
(2004)
J. Org. Chem.
, vol.69
, pp. 1
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-
Lemal, D.M.1
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16
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-
0142061098
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-
Zhang, D. Y.; Hrovat, D. A.; Abe, D.; Borden, W. T. J. Am. Chem. Soc. 2003, 125, 12823.
-
(2003)
J. Am. Chem. Soc.
, vol.125
, pp. 12823
-
-
Zhang, D.Y.1
Hrovat, D.A.2
Abe, D.3
Borden, W.T.4
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0013004607
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-
(a) Andersson, K.; Malmqvist, P.-Å.; Roos, B. O.; Sadlej, A. J.; Wolinski, K. J. Phys. Chem. 1990, 94, 5483.
-
(1990)
J. Phys. Chem.
, vol.94
, pp. 5483
-
-
Andersson, K.1
Malmqvist, P.-Å.2
Roos, B.O.3
Sadlej, A.J.4
Wolinski, K.5
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21
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36448998619
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-
(b) Andersson, K.; Malmqvist, P.-Å.; Roos, B. O. J. Chem. Phys. 1992, 96, 1218.
-
(1992)
J. Chem. Phys.
, vol.96
, pp. 1218
-
-
Andersson, K.1
Malmqvist, P.-Å.2
Roos, B.O.3
-
23
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-
26844534384
-
-
Krishnan, R.; Binkley, J. S.; Seeger, R.; Pople, J. A. J. Chem. Phys. 1980, 72, 650.
-
(1980)
J. Chem. Phys.
, vol.72
, pp. 650
-
-
Krishnan, R.1
Binkley, J.S.2
Seeger, R.3
Pople, J.A.4
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26
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33645755840
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note
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(a) The CASSCF geometries of 1a-f and of the singlet and triplet states of 2a-f are available as Supporting Information. Also available are the optimized geometries and energies of the singlet diradical intermediates that were located for 2a,c, and e.
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27
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33645782239
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note
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2 symmetry, with radical centers, especially those in 2c, that are more highly pyramidalized than the radical centers in the diradical TSs for ring inversion. The energies of the singlet diradical intermediate and the TSs differ most for 2c, for which the CASPT2/6-311G* energy difference is 2.0 kcal/mol. Because of the one fewer real vibrational frequency in the TS than in the intermediate, the CASPT2/6-311G* enthalpies of these two species differ by only 1.3 kcal/mol.
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28
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33645789783
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note
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The dominant configuration in the CASSCF wave function has the A NBMO doubly occupied; however, there is a second configuration, of smaller weight, in which the S NBMO is doubly occupied.
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29
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33845377664
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There is an obvious analogy between the cooperative stabilization of singlet diradical 2d and the captodative stabilization of a monoradical by a π donor and a π acceptor attached to the radical center. For a review of the captodative effect, see: Viehe, H. G.; Janousek, Z.; Merenyi, R.; Stella, L. Acc. Chem. Res. 1985, 18, 148.
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(1985)
Acc. Chem. Res.
, vol.18
, pp. 148
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Viehe, H.G.1
Janousek, Z.2
Merenyi, R.3
Stella, L.4
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30
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33645782967
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note
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2 carbon is anomalously short (1.330 Å), 0.008 Å shorter than the radical center that does not undergo inversion in the TS.
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31
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0003691438
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Wiley: New York
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See, for example: Borden, W. T. Diradicals; Wiley: New York, 1982; pp 1-61.
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(1982)
Diradicals
, pp. 1-61
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Borden, W.T.1
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