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Volumn 101, Issue 41, 1997, Pages 7463-7467

Observation of a large steric effect on the XeBr* formation in the reaction of oriented CF3Br with Xe(3P)

Author keywords

[No Author keywords available]

Indexed keywords

ATOMS; ELECTRON ENERGY LEVELS; ELECTRONS; HALOGEN COMPOUNDS; IONS; MOLECULAR ORIENTATION; MOLECULES; XENON;

EID: 0031561428     PISSN: 10895639     EISSN: None     Source Type: Journal    
DOI: 10.1021/jp970055w     Document Type: Article
Times cited : (9)

References (49)
  • 1
    • 0017174505 scopus 로고
    • Brooks, P. R. Science 1976, 11. Stolte, S. Ber. Bunsen-Ges. Physik. Chem. 1982, 86, 413. Parker, D. H.; Bernstein, R. B. Annu. Rev. Phys. Chem. 1989, 40, 561. Levine, R. D.; Zweail, A.; El-Sayed, M. A. J. Phys. Chem. 1991, 95, 7961. Soep, B.; Vetter, R. J. Phys. Chem. 1995, 99, 13569. Kuwata, K.; Kasai, T. The Chemical Dynamics and Kinetics of Small Radicals, Part II; World Scientific: London, 1995; Chapter 12. Orr-Ewing, A. J. J. Chem. Soc., Faraday Trans. 1996, 92, 881. Loesch, H. J. Annu. Rev. Phys. Chem. 1995, 46, 555. Brooks, P. R. Int. Rev. Phys. Chem. 1995, 14, 327. Brooks, P. R.; Harland, P. W. In Advances in Gas Phase Ion Chemistry; Eds. Adams, N. G., Babcock, L. M. Eds.; JAI Press; Greenwich, CT, 1996; Vol. 2, p 1.
    • (1976) Science , pp. 11
    • Brooks, P.R.1
  • 2
    • 0001304714 scopus 로고
    • Brooks, P. R. Science 1976, 11. Stolte, S. Ber. Bunsen-Ges. Physik. Chem. 1982, 86, 413. Parker, D. H.; Bernstein, R. B. Annu. Rev. Phys. Chem. 1989, 40, 561. Levine, R. D.; Zweail, A.; El-Sayed, M. A. J. Phys. Chem. 1991, 95, 7961. Soep, B.; Vetter, R. J. Phys. Chem. 1995, 99, 13569. Kuwata, K.; Kasai, T. The Chemical Dynamics and Kinetics of Small Radicals, Part II; World Scientific: London, 1995; Chapter 12. Orr-Ewing, A. J. J. Chem. Soc., Faraday Trans. 1996, 92, 881. Loesch, H. J. Annu. Rev. Phys. Chem. 1995, 46, 555. Brooks, P. R. Int. Rev. Phys. Chem. 1995, 14, 327. Brooks, P. R.; Harland, P. W. In Advances in Gas Phase Ion Chemistry; Eds. Adams, N. G., Babcock, L. M. Eds.; JAI Press; Greenwich, CT, 1996; Vol. 2, p 1.
    • (1982) Ber. Bunsen-Ges. Physik. Chem. , vol.86 , pp. 413
    • Stolte, S.1
  • 3
    • 0001021631 scopus 로고
    • Brooks, P. R. Science 1976, 11. Stolte, S. Ber. Bunsen-Ges. Physik. Chem. 1982, 86, 413. Parker, D. H.; Bernstein, R. B. Annu. Rev. Phys. Chem. 1989, 40, 561. Levine, R. D.; Zweail, A.; El-Sayed, M. A. J. Phys. Chem. 1991, 95, 7961. Soep, B.; Vetter, R. J. Phys. Chem. 1995, 99, 13569. Kuwata, K.; Kasai, T. The Chemical Dynamics and Kinetics of Small Radicals, Part II; World Scientific: London, 1995; Chapter 12. Orr-Ewing, A. J. J. Chem. Soc., Faraday Trans. 1996, 92, 881. Loesch, H. J. Annu. Rev. Phys. Chem. 1995, 46, 555. Brooks, P. R. Int. Rev. Phys. Chem. 1995, 14, 327. Brooks, P. R.; Harland, P. W. In Advances in Gas Phase Ion Chemistry; Eds. Adams, N. G., Babcock, L. M. Eds.; JAI Press; Greenwich, CT, 1996; Vol. 2, p 1.
    • (1989) Annu. Rev. Phys. Chem. , vol.40 , pp. 561
    • Parker, D.H.1    Bernstein, R.B.2
  • 4
    • 0001403816 scopus 로고
    • Brooks, P. R. Science 1976, 11. Stolte, S. Ber. Bunsen-Ges. Physik. Chem. 1982, 86, 413. Parker, D. H.; Bernstein, R. B. Annu. Rev. Phys. Chem. 1989, 40, 561. Levine, R. D.; Zweail, A.; El-Sayed, M. A. J. Phys. Chem. 1991, 95, 7961. Soep, B.; Vetter, R. J. Phys. Chem. 1995, 99, 13569. Kuwata, K.; Kasai, T. The Chemical Dynamics and Kinetics of Small Radicals, Part II; World Scientific: London, 1995; Chapter 12. Orr-Ewing, A. J. J. Chem. Soc., Faraday Trans. 1996, 92, 881. Loesch, H. J. Annu. Rev. Phys. Chem. 1995, 46, 555. Brooks, P. R. Int. Rev. Phys. Chem. 1995, 14, 327. Brooks, P. R.; Harland, P. W. In Advances in Gas Phase Ion Chemistry; Eds. Adams, N. G., Babcock, L. M. Eds.; JAI Press; Greenwich, CT, 1996; Vol. 2, p 1.
    • (1991) J. Phys. Chem. , vol.95 , pp. 7961
    • Levine, R.D.1    Zweail, A.2    El-Sayed, M.A.3
  • 5
    • 33751156003 scopus 로고
    • Brooks, P. R. Science 1976, 11. Stolte, S. Ber. Bunsen-Ges. Physik. Chem. 1982, 86, 413. Parker, D. H.; Bernstein, R. B. Annu. Rev. Phys. Chem. 1989, 40, 561. Levine, R. D.; Zweail, A.; El-Sayed, M. A. J. Phys. Chem. 1991, 95, 7961. Soep, B.; Vetter, R. J. Phys. Chem. 1995, 99, 13569. Kuwata, K.; Kasai, T. The Chemical Dynamics and Kinetics of Small Radicals, Part II; World Scientific: London, 1995; Chapter 12. Orr-Ewing, A. J. J. Chem. Soc., Faraday Trans. 1996, 92, 881. Loesch, H. J. Annu. Rev. Phys. Chem. 1995, 46, 555. Brooks, P. R. Int. Rev. Phys. Chem. 1995, 14, 327. Brooks, P. R.; Harland, P. W. In Advances in Gas Phase Ion Chemistry; Eds. Adams, N. G., Babcock, L. M. Eds.; JAI Press; Greenwich, CT, 1996; Vol. 2, p 1.
    • (1995) J. Phys. Chem. , vol.99 , pp. 13569
    • Soep, B.1    Vetter, R.2
  • 6
    • 0001517621 scopus 로고
    • World Scientific: London
    • Brooks, P. R. Science 1976, 11. Stolte, S. Ber. Bunsen-Ges. Physik. Chem. 1982, 86, 413. Parker, D. H.; Bernstein, R. B. Annu. Rev. Phys. Chem. 1989, 40, 561. Levine, R. D.; Zweail, A.; El-Sayed, M. A. J. Phys. Chem. 1991, 95, 7961. Soep, B.; Vetter, R. J. Phys. Chem. 1995, 99, 13569. Kuwata, K.; Kasai, T. The Chemical Dynamics and Kinetics of Small Radicals, Part II; World Scientific: London, 1995; Chapter 12. Orr-Ewing, A. J. J. Chem. Soc., Faraday Trans. 1996, 92, 881. Loesch, H. J. Annu. Rev. Phys. Chem. 1995, 46, 555. Brooks, P. R. Int. Rev. Phys. Chem. 1995, 14, 327. Brooks, P. R.; Harland, P. W. In Advances in Gas Phase Ion Chemistry; Eds. Adams, N. G., Babcock, L. M. Eds.; JAI Press; Greenwich, CT, 1996; Vol. 2, p 1.
    • (1995) The Chemical Dynamics and Kinetics of Small Radicals , Issue.2 PART
    • Kuwata, K.1    Kasai, T.2
  • 7
    • 33748997430 scopus 로고    scopus 로고
    • Brooks, P. R. Science 1976, 11. Stolte, S. Ber. Bunsen-Ges. Physik. Chem. 1982, 86, 413. Parker, D. H.; Bernstein, R. B. Annu. Rev. Phys. Chem. 1989, 40, 561. Levine, R. D.; Zweail, A.; El-Sayed, M. A. J. Phys. Chem. 1991, 95, 7961. Soep, B.; Vetter, R. J. Phys. Chem. 1995, 99, 13569. Kuwata, K.; Kasai, T. The Chemical Dynamics and Kinetics of Small Radicals, Part II; World Scientific: London, 1995; Chapter 12. Orr-Ewing, A. J. J. Chem. Soc., Faraday Trans. 1996, 92, 881. Loesch, H. J. Annu. Rev. Phys. Chem. 1995, 46, 555. Brooks, P. R. Int. Rev. Phys. Chem. 1995, 14, 327. Brooks, P. R.; Harland, P. W. In Advances in Gas Phase Ion Chemistry; Eds. Adams, N. G., Babcock, L. M. Eds.; JAI Press; Greenwich, CT, 1996; Vol. 2, p 1.
    • (1996) J. Chem. Soc., Faraday Trans. , vol.92 , pp. 881
    • Orr-Ewing, A.J.1
  • 8
    • 0000030033 scopus 로고
    • Brooks, P. R. Science 1976, 11. Stolte, S. Ber. Bunsen-Ges. Physik. Chem. 1982, 86, 413. Parker, D. H.; Bernstein, R. B. Annu. Rev. Phys. Chem. 1989, 40, 561. Levine, R. D.; Zweail, A.; El-Sayed, M. A. J. Phys. Chem. 1991, 95, 7961. Soep, B.; Vetter, R. J. Phys. Chem. 1995, 99, 13569. Kuwata, K.; Kasai, T. The Chemical Dynamics and Kinetics of Small Radicals, Part II; World Scientific: London, 1995; Chapter 12. Orr-Ewing, A. J. J. Chem. Soc., Faraday Trans. 1996, 92, 881. Loesch, H. J. Annu. Rev. Phys. Chem. 1995, 46, 555. Brooks, P. R. Int. Rev. Phys. Chem. 1995, 14, 327. Brooks, P. R.; Harland, P. W. In Advances in Gas Phase Ion Chemistry; Eds. Adams, N. G., Babcock, L. M. Eds.; JAI Press; Greenwich, CT, 1996; Vol. 2, p 1.
    • (1995) Annu. Rev. Phys. Chem. , vol.46 , pp. 555
    • Loesch, H.J.1
  • 9
    • 0037487114 scopus 로고
    • Brooks, P. R. Science 1976, 11. Stolte, S. Ber. Bunsen-Ges. Physik. Chem. 1982, 86, 413. Parker, D. H.; Bernstein, R. B. Annu. Rev. Phys. Chem. 1989, 40, 561. Levine, R. D.; Zweail, A.; El-Sayed, M. A. J. Phys. Chem. 1991, 95, 7961. Soep, B.; Vetter, R. J. Phys. Chem. 1995, 99, 13569. Kuwata, K.; Kasai, T. The Chemical Dynamics and Kinetics of Small Radicals, Part II; World Scientific: London, 1995; Chapter 12. Orr-Ewing, A. J. J. Chem. Soc., Faraday Trans. 1996, 92, 881. Loesch, H. J. Annu. Rev. Phys. Chem. 1995, 46, 555. Brooks, P. R. Int. Rev. Phys. Chem. 1995, 14, 327. Brooks, P. R.; Harland, P. W. In Advances in Gas Phase Ion Chemistry; Eds. Adams, N. G., Babcock, L. M. Eds.; JAI Press; Greenwich, CT, 1996; Vol. 2, p 1.
    • (1995) Int. Rev. Phys. Chem. , vol.14 , pp. 327
    • Brooks, P.R.1
  • 10
    • 0001517702 scopus 로고    scopus 로고
    • Eds. Adams, N. G., Babcock, L. M. Eds.; JAI Press; Greenwich, CT
    • Brooks, P. R. Science 1976, 11. Stolte, S. Ber. Bunsen-Ges. Physik. Chem. 1982, 86, 413. Parker, D. H.; Bernstein, R. B. Annu. Rev. Phys. Chem. 1989, 40, 561. Levine, R. D.; Zweail, A.; El-Sayed, M. A. J. Phys. Chem. 1991, 95, 7961. Soep, B.; Vetter, R. J. Phys. Chem. 1995, 99, 13569. Kuwata, K.; Kasai, T. The Chemical Dynamics and Kinetics of Small Radicals, Part II; World Scientific: London, 1995; Chapter 12. Orr-Ewing, A. J. J. Chem. Soc., Faraday Trans. 1996, 92, 881. Loesch, H. J. Annu. Rev. Phys. Chem. 1995, 46, 555. Brooks, P. R. Int. Rev. Phys. Chem. 1995, 14, 327. Brooks, P. R.; Harland, P. W. In Advances in Gas Phase Ion Chemistry; Eds. Adams, N. G., Babcock, L. M. Eds.; JAI Press; Greenwich, CT, 1996; Vol. 2, p 1.
    • (1996) Advances in Gas Phase Ion Chemistry , vol.2 , pp. 1
    • Brooks, P.R.1    Harland, P.W.2
  • 11
    • 0004171249 scopus 로고
    • Xing, G.; Kasai, T.; Brooks, P. R. J. Am. Chem. Soc. 1994, 116, 7421. Xing, G.; Kasai, T.; Brooks, P. R. J. Am. Chem. Soc. 1995, 117, 2581. Levine, R. D.; Bernstein, R. B. Molecular Reaction Dynamics and Chemical Reactivity; Oxford University Press: New York, 1987. Harland, P. W.; Carman, H. S., Jr.; Phillips, L. F.; Brooks, P. R. J. Chem. Phys. 1989, 90, 5201. Harland, P. W.; Carman, H. S., Jr.; Phillips, L. F.; Brooks, P. R. J. Chem. Phys. 1990, 93, 1089. Harland, P. W.; Carman, H. S., Jr.; Phillips, L. F.; Brooks, P. R. J. Phys. Chem. 1991, 95, 8137.
    • (1994) J. Am. Chem. Soc. , vol.116 , pp. 7421
    • Xing, G.1    Kasai, T.2    Brooks, P.R.3
  • 12
    • 0000995218 scopus 로고
    • Xing, G.; Kasai, T.; Brooks, P. R. J. Am. Chem. Soc. 1994, 116, 7421. Xing, G.; Kasai, T.; Brooks, P. R. J. Am. Chem. Soc. 1995, 117, 2581. Levine, R. D.; Bernstein, R. B. Molecular Reaction Dynamics and Chemical Reactivity; Oxford University Press: New York, 1987. Harland, P. W.; Carman, H. S., Jr.; Phillips, L. F.; Brooks, P. R. J. Chem. Phys. 1989, 90, 5201. Harland, P. W.; Carman, H. S., Jr.; Phillips, L. F.; Brooks, P. R. J. Chem. Phys. 1990, 93, 1089. Harland, P. W.; Carman, H. S., Jr.; Phillips, L. F.; Brooks, P. R. J. Phys. Chem. 1991, 95, 8137.
    • (1995) J. Am. Chem. Soc. , vol.117 , pp. 2581
    • Xing, G.1    Kasai, T.2    Brooks, P.R.3
  • 13
    • 0003802115 scopus 로고
    • Oxford University Press: New York
    • Xing, G.; Kasai, T.; Brooks, P. R. J. Am. Chem. Soc. 1994, 116, 7421. Xing, G.; Kasai, T.; Brooks, P. R. J. Am. Chem. Soc. 1995, 117, 2581. Levine, R. D.; Bernstein, R. B. Molecular Reaction Dynamics and Chemical Reactivity; Oxford University Press: New York, 1987. Harland, P. W.; Carman, H. S., Jr.; Phillips, L. F.; Brooks, P. R. J. Chem. Phys. 1989, 90, 5201. Harland, P. W.; Carman, H. S., Jr.; Phillips, L. F.; Brooks, P. R. J. Chem. Phys. 1990, 93, 1089. Harland, P. W.; Carman, H. S., Jr.; Phillips, L. F.; Brooks, P. R. J. Phys. Chem. 1991, 95, 8137.
    • (1987) Molecular Reaction Dynamics and Chemical Reactivity
    • Levine, R.D.1    Bernstein, R.B.2
  • 14
    • 0004240709 scopus 로고
    • Xing, G.; Kasai, T.; Brooks, P. R. J. Am. Chem. Soc. 1994, 116, 7421. Xing, G.; Kasai, T.; Brooks, P. R. J. Am. Chem. Soc. 1995, 117, 2581. Levine, R. D.; Bernstein, R. B. Molecular Reaction Dynamics and Chemical Reactivity; Oxford University Press: New York, 1987. Harland, P. W.; Carman, H. S., Jr.; Phillips, L. F.; Brooks, P. R. J. Chem. Phys. 1989, 90, 5201. Harland, P. W.; Carman, H. S., Jr.; Phillips, L. F.; Brooks, P. R. J. Chem. Phys. 1990, 93, 1089. Harland, P. W.; Carman, H. S., Jr.; Phillips, L. F.; Brooks, P. R. J. Phys. Chem. 1991, 95, 8137.
    • (1989) J. Chem. Phys. , vol.90 , pp. 5201
    • Harland, P.W.1    Carman Jr., H.S.2    Phillips, L.F.3    Brooks, P.R.4
  • 15
    • 0000055836 scopus 로고
    • Xing, G.; Kasai, T.; Brooks, P. R. J. Am. Chem. Soc. 1994, 116, 7421. Xing, G.; Kasai, T.; Brooks, P. R. J. Am. Chem. Soc. 1995, 117, 2581. Levine, R. D.; Bernstein, R. B. Molecular Reaction Dynamics and Chemical Reactivity; Oxford University Press: New York, 1987. Harland, P. W.; Carman, H. S., Jr.; Phillips, L. F.; Brooks, P. R. J. Chem. Phys. 1989, 90, 5201. Harland, P. W.; Carman, H. S., Jr.; Phillips, L. F.; Brooks, P. R. J. Chem. Phys. 1990, 93, 1089. Harland, P. W.; Carman, H. S., Jr.; Phillips, L. F.; Brooks, P. R. J. Phys. Chem. 1991, 95, 8137.
    • (1990) J. Chem. Phys. , vol.93 , pp. 1089
    • Harland, P.W.1    Carman Jr., H.S.2    Phillips, L.F.3    Brooks, P.R.4
  • 16
    • 0000061571 scopus 로고
    • Xing, G.; Kasai, T.; Brooks, P. R. J. Am. Chem. Soc. 1994, 116, 7421. Xing, G.; Kasai, T.; Brooks, P. R. J. Am. Chem. Soc. 1995, 117, 2581. Levine, R. D.; Bernstein, R. B. Molecular Reaction Dynamics and Chemical Reactivity; Oxford University Press: New York, 1987. Harland, P. W.; Carman, H. S., Jr.; Phillips, L. F.; Brooks, P. R. J. Chem. Phys. 1989, 90, 5201. Harland, P. W.; Carman, H. S., Jr.; Phillips, L. F.; Brooks, P. R. J. Chem. Phys. 1990, 93, 1089. Harland, P. W.; Carman, H. S., Jr.; Phillips, L. F.; Brooks, P. R. J. Phys. Chem. 1991, 95, 8137.
    • (1991) J. Phys. Chem. , vol.95 , pp. 8137
    • Harland, P.W.1    Carman Jr., H.S.2    Phillips, L.F.3    Brooks, P.R.4
  • 22
    • 0000013829 scopus 로고
    • Ohoyama, H.; Kasai, T.; Ohashi, K.; Kuwata, K. Chem. Phys. 1992, 165, 155. Ohoyama, H.; Iguro, T.; Kasai, T.; Kuwata, K. Chem. Phys. Lett. 1993, 209, 361. Ohoyama, H.; Makita, H.; Kasai, T.; Kuwata, K. J. Phys. Chem. 1995, 99, 5798. Takahashi, H.; Ohoyama, H.; Kasai, T.; Nakano, M.; Yamaguchi, K. J. Phys. Chem. 1995, 99, 1985.
    • (1992) Chem. Phys. , vol.165 , pp. 155
    • Ohoyama, H.1    Kasai, T.2    Ohashi, K.3    Kuwata, K.4
  • 23
    • 0010805460 scopus 로고
    • Ohoyama, H.; Kasai, T.; Ohashi, K.; Kuwata, K. Chem. Phys. 1992, 165, 155. Ohoyama, H.; Iguro, T.; Kasai, T.; Kuwata, K. Chem. Phys. Lett. 1993, 209, 361. Ohoyama, H.; Makita, H.; Kasai, T.; Kuwata, K. J. Phys. Chem. 1995, 99, 5798. Takahashi, H.; Ohoyama, H.; Kasai, T.; Nakano, M.; Yamaguchi, K. J. Phys. Chem. 1995, 99, 1985.
    • (1993) Chem. Phys. Lett. , vol.209 , pp. 361
    • Ohoyama, H.1    Iguro, T.2    Kasai, T.3    Kuwata, K.4
  • 24
    • 0042807854 scopus 로고
    • Ohoyama, H.; Kasai, T.; Ohashi, K.; Kuwata, K. Chem. Phys. 1992, 165, 155. Ohoyama, H.; Iguro, T.; Kasai, T.; Kuwata, K. Chem. Phys. Lett. 1993, 209, 361. Ohoyama, H.; Makita, H.; Kasai, T.; Kuwata, K. J. Phys. Chem. 1995, 99, 5798. Takahashi, H.; Ohoyama, H.; Kasai, T.; Nakano, M.; Yamaguchi, K. J. Phys. Chem. 1995, 99, 1985.
    • (1995) J. Phys. Chem. , vol.99 , pp. 5798
    • Ohoyama, H.1    Makita, H.2    Kasai, T.3    Kuwata, K.4
  • 25
    • 0042807854 scopus 로고
    • Ohoyama, H.; Kasai, T.; Ohashi, K.; Kuwata, K. Chem. Phys. 1992, 165, 155. Ohoyama, H.; Iguro, T.; Kasai, T.; Kuwata, K. Chem. Phys. Lett. 1993, 209, 361. Ohoyama, H.; Makita, H.; Kasai, T.; Kuwata, K. J. Phys. Chem. 1995, 99, 5798. Takahashi, H.; Ohoyama, H.; Kasai, T.; Nakano, M.; Yamaguchi, K. J. Phys. Chem. 1995, 99, 1985.
    • (1995) J. Phys. Chem. , vol.99 , pp. 1985
    • Takahashi, H.1    Ohoyama, H.2    Kasai, T.3    Nakano, M.4    Yamaguchi, K.5
  • 28
    • 30244461681 scopus 로고
    • Hagena, O. F.; Varma, A. K. Rev. Sci. Instrum. 1968, 39, 47. Anderson, J. B.; Andres, R. P.; Fenn, J. B. Adv. Chem. Phys. 1966, 10, 275.
    • (1968) Rev. Sci. Instrum. , vol.39 , pp. 47
    • Hagena, O.F.1    Varma, A.K.2
  • 38
    • 0013070748 scopus 로고
    • Brooks, P. R.; Mckillop, J. S.; Pippin, H. G. Chem. Phys. Lett. 1979, 66, 144. Brooks, P. R. J. Phys. Chem. 1993, 97, 2153. Brooks, P. R. Faraday Discuss. Chem. Soc. 1973, 55, 299.
    • (1993) J. Phys. Chem. , vol.97 , pp. 2153
    • Brooks, P.R.1
  • 39
    • 0042106997 scopus 로고
    • Brooks, P. R.; Mckillop, J. S.; Pippin, H. G. Chem. Phys. Lett. 1979, 66, 144. Brooks, P. R. J. Phys. Chem. 1993, 97, 2153. Brooks, P. R. Faraday Discuss. Chem. Soc. 1973, 55, 299.
    • (1973) Faraday Discuss. Chem. Soc. , vol.55 , pp. 299
    • Brooks, P.R.1
  • 41
    • 0342290612 scopus 로고
    • U. S. Department of Commerce Circular; Government Printing Office: Washington, D.C.
    • Moore, C. E. Atomic energy levels; U. S. Department of Commerce Circular; Government Printing Office: Washington, D.C., 1952; p 467.
    • (1952) Atomic Energy Levels , pp. 467
    • Moore, C.E.1


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