-
1
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30044452003
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-
Chemical parlance knows the "bay" region in phenanthrene, which has three sides, and the "fjord" region (four sides) in benzo[c]phenanthrene. There does not seem to exist a catchy term for the inner region in [5]helicene (five sides) or in the related compounds 1 or 9,9′-bifluorenylidene of this paper. We suggest to call it a "cove", which is "a circular or round inlet with a narrow entrance" (http://en.wikipedia.org/wiki/Cove as of March 18, 2005). This term would be most apt if the compounds in question were planar.
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5
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30044434139
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note
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[5] However, the molecules studied there were fully conjugated 1,n-difluoropolyynes and planar all-trans-1,n-difluoropolyenes in the zigzag conformation. These situations are not comparable with the situation in 1Z. Further, if a through-bond F,F coupling were operating in 1Z, this would probably also be the case for 1E.
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-
-
-
6
-
-
3142702892
-
-
P. F. Provasi, G. A. Aucar, S. P. A. Sauer, J. Phys. Chem. A 2004, 108, 5393-5398.
-
(2004)
J. Phys. Chem. A
, vol.108
, pp. 5393-5398
-
-
Provasi, P.F.1
Aucar, G.A.2
Sauer, S.P.A.3
-
7
-
-
0034600286
-
-
For another c/(F,F)/J(F,F) relationship, see: F. B. Mallory, C. W. Mallory, K. E. Butler, M. B. Lewis, A. Q. Xia, E. D. Luzik, Jr., L. E. Fredenburgh, M. M. Ramanjulu, Q. N. Van, M. M. Francl, D. A. Freed, C. C. Wray, C. Hann, M. Nerz-Stormes, P. J. Carroll, L. E. Chirlian, J. Am. Chem. Soc. 2000, 122, 4108-4116.
-
(2000)
J. Am. Chem. Soc.
, vol.122
, pp. 4108-4116
-
-
Mallory, F.B.1
Mallory, C.W.2
Butler, K.E.3
Lewis, M.B.4
Xia, A.Q.5
Luzik Jr., E.D.6
Fredenburgh, L.E.7
Ramanjulu, M.M.8
Van, Q.N.9
Francl, M.M.10
Freed, D.A.11
Wray, C.C.12
Hann, C.13
Nerz-Stormes, M.14
Carroll, P.J.15
Chirlian, L.E.16
-
12
-
-
3843150350
-
-
T. Tuttle, J. Gräfenstein, D. Cremer, Chem. Phys. Lett. 2004, 394, 5-13.
-
(2004)
Chem. Phys. Lett.
, vol.394
, pp. 5-13
-
-
Tuttle, T.1
Gräfenstein, J.2
Cremer, D.3
-
13
-
-
1642310449
-
-
J. E. Del Bene, J. Elguero, I. Alkorta, M. Yáñez, O. Mó, J. Chem. Phys. 2004, 120, 3237-3243.
-
(2004)
J. Chem. Phys.
, vol.120
, pp. 3237-3243
-
-
Del Bene, J.E.1
Elguero, J.2
Alkorta, I.3
Yáñez, M.4
Mó, O.5
-
15
-
-
0006247716
-
-
I. Agranat, M. Rabinovitz, I. Gosnay, A. Weitzen-Dagan, J. Am. Chem. Soc. 1972, 94, 2889-2891.
-
(1972)
J. Am. Chem. Soc.
, vol.94
, pp. 2889-2891
-
-
Agranat, I.1
Rabinovitz, M.2
Gosnay, I.3
Weitzen-Dagan, A.4
-
16
-
-
84987358404
-
-
I. Gosnay, E. D. Bergmann, M. Rabinovitz, I. Agranat, Isr. J. Chem. 1972, 10, 423-437.
-
(1972)
Isr. J. Chem.
, vol.10
, pp. 423-437
-
-
Gosnay, I.1
Bergmann, E.D.2
Rabinovitz, M.3
Agranat, I.4
-
18
-
-
37049115965
-
-
I. Agranat, M. Rabinovitz, A. Weitzen-Dagan, I. Gosnay, J. Chem. Soc., Chem. Commun. 1972, 732-733.
-
(1972)
J. Chem. Soc., Chem. Commun.
, pp. 732-733
-
-
Agranat, I.1
Rabinovitz, M.2
Weitzen-Dagan, A.3
Gosnay, I.4
-
19
-
-
30044442762
-
-
Bruker-Franzen Analytik, Bremen
-
WIN-DAISY, version 4.05, Bruker-Franzen Analytik, Bremen, 1999.
-
(1999)
WIN-DAISY, Version 4.05
-
-
-
21
-
-
33744685256
-
-
V. Wray, L. Ernst, E. Lustig, J. Magn. Reson. 1977, 27, 1-21.
-
(1977)
J. Magn. Reson.
, vol.27
, pp. 1-21
-
-
Wray, V.1
Ernst, L.2
Lustig, E.3
-
22
-
-
37049069996
-
-
R. J. Abraham, M. Edgar, L. Griffiths, R. L. Powell, J. Chem. Soc., Perkin Trans. 2 1995, 561-564.
-
(1995)
J. Chem. Soc., Perkin Trans. 2
, pp. 561-564
-
-
Abraham, R.J.1
Edgar, M.2
Griffiths, L.3
Powell, R.L.4
-
23
-
-
0345309631
-
-
R. J. Abraham, M. A. Warne, L. Griffiths, J. Chem. Soc., Perkin Trans. 2 1997, 203-207.
-
(1997)
J. Chem. Soc., Perkin Trans. 2
, pp. 203-207
-
-
Abraham, R.J.1
Warne, M.A.2
Griffiths, L.3
-
25
-
-
0141704726
-
-
Gaussian, Inc., Pittsburgh, PA, USA
-
M. J. Frisch, G. W. Trucks, H. B. Schlegel, G. E. Scuseria, M. A. Robb, J. R. Cheeseman, J. A. Montgomery, Jr., T. Vreven, K. N. Kudin, J. C. Burant, J. M. Millam, S. S. Iyengar, J. Tomasi, V. Barone, B. Mennucci, M. Cossi, G. Scalmani, N. Rega, G. A. Petersson, H. Nakatsuji, M. Hada, M. Ehara, K. Toyota, R. Fukuda, J. Hasegawa, M. Ishida, T. Nakajima, Y. Honda, O. Kitao, H. Nakai, M. Klene, X. Li, J. E. Knox, H. P. Hratchian, J. B. Cross, C. Adamo, J. Jaramillo, R. Gomperts, R. E. Stratmann, O. Yazyev, A. J. Austin, R. Cammi, C. Pomelli, J. W. Ochterski, P. Y. Ayala, K. Morokuma, G. A. Voth, P. Salvador, J. J. Dannenberg, V. G. Zakrzewski, S. Dapprich, A. D. Daniels, M. C. Strain, O. Farkas, D. K. Malick, A. D. Rabuck, K. Raghavachari, J. B. Foresman, J. V. Ortiz, Q. Cui, A. G. Baboul, S. Clifford, J. Cioslowski, B. B. Stefanov, G. Liu, A. Liashenko, P. Piskorz, I. Komaromi, R. L. Martin, D. J. Fox, T. Keith, M. A. Al-Laham, C. Y. Peng, A. Nanayakkara, M. Challacombe, P. M. W. Gill, B. Johnson, W. Chen, M. W. Wong, C. Gonzalez, J. A. Pople, Gaussian 03, Revision A.1, Gaussian, Inc., Pittsburgh, PA, USA, 2003.
-
(2003)
Gaussian 03, Revision A.1
-
-
Frisch, M.J.1
Trucks, G.W.2
Schlegel, H.B.3
Scuseria, G.E.4
Robb, M.A.5
Cheeseman, J.R.6
Montgomery Jr., J.A.7
Vreven, T.8
Kudin, K.N.9
Burant, J.C.10
Millam, J.M.11
Iyengar, S.S.12
Tomasi, J.13
Barone, V.14
Mennucci, B.15
Cossi, M.16
Scalmani, G.17
Rega, N.18
Petersson, G.A.19
Nakatsuji, H.20
Hada, M.21
Ehara, M.22
Toyota, K.23
Fukuda, R.24
Hasegawa, J.25
Ishida, M.26
Nakajima, T.27
Honda, Y.28
Kitao, O.29
Nakai, H.30
Klene, M.31
Li, X.32
Knox, J.E.33
Hratchian, H.P.34
Cross, J.B.35
Adamo, C.36
Jaramillo, J.37
Gomperts, R.38
Stratmann, R.E.39
Yazyev, O.40
Austin, A.J.41
Cammi, R.42
Pomelli, C.43
Ochterski, J.W.44
Ayala, P.Y.45
Morokuma, K.46
Voth, G.A.47
Salvador, P.48
Dannenberg, J.J.49
Zakrzewski, V.G.50
Dapprich, S.51
Daniels, A.D.52
Strain, M.C.53
Farkas, O.54
Malick, D.K.55
Rabuck, A.D.56
Raghavachari, K.57
Foresman, J.B.58
Ortiz, J.V.59
Cui, Q.60
Baboul, A.G.61
Clifford, S.62
Cioslowski, J.63
Stefanov, B.B.64
Liu, G.65
Liashenko, A.66
Piskorz, P.67
Komaromi, I.68
Martin, R.L.69
Fox, D.J.70
Keith, T.71
Al-Laham, M.A.72
Peng, C.Y.73
Nanayakkara, A.74
Challacombe, M.75
Gill, P.M.W.76
Johnson, B.77
Chen, W.78
Wong, M.W.79
Gonzalez, C.80
Pople, J.A.81
more..
-
26
-
-
0037769993
-
-
J. Grunenberg, R. Streubel, G. v. Frantzius, W. Marten, J. Chem. Phys. 2003, 119, 165-169.
-
(2003)
J. Chem. Phys.
, vol.119
, pp. 165-169
-
-
Grunenberg, J.1
Streubel, R.2
Frantzius, G.V.3
Marten, W.4
-
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note
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R = 15.9min (1E) and 16.9 min (1Z)]. We are grateful to Dipl.-Chem. Madalina Stefan for carrying out the HPLC experiments.
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