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Volumn 125, Issue 32, 2003, Pages 9787-9800

Photoinduced axial ligation and deligation dynamics of nonplanar nickel dodecaarylporphyrins

Author keywords

[No Author keywords available]

Indexed keywords

ALKALINITY; BINDING ENERGY; GROUND STATE; PORPHYRINS; SOLVENTS;

EID: 0043076205     PISSN: 00027863     EISSN: None     Source Type: Journal    
DOI: 10.1021/ja020611m     Document Type: Article
Times cited : (63)

References (88)
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    • note
    • (a) Washington University. (b) Hunter College and The Rockefeller University. (c) University of California. (d) Sandia National Laboratories. (e) Louisiana State University. (f) National Academy of Sciences of Belarus. (g) Brookhaven National Laboratory.
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    • note
    • x2-y2) has been discussed.
  • 28
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    • note
    • 3b.7
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    • note
    • 14c
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    • Dolphin, D., Ed.; Academic: New York
    • (c) Gouterman. M. In The Porphyrins; Dolphin, D., Ed.; Academic: New York, 1978; Vol. III, pp 1-153.
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    • note
    • 2 decay.
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    • note
    • Vibrational relaxation dynamics may be convolved with the evolution of the short-lived intermediates prior to the deligation step (not indicated in Figure 1).
  • 59
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    • Ph.D. Dissertation Thesis, University of California
    • (b) Nurco, D. J. Ph.D. Dissertation Thesis, University of California, 1998.
    • (1998)
    • Nurco, D.J.1
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    • note
    • 2 has also been solved and this complex adopts a saddle structure with some ruffle distortion.
  • 61
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    • The nomenclature for nonplanar distortions is that suggested by Scheidt and Lee (Scheidt, W.; Lee, Y. J. Struct. Bonding (Berlin), 1987, 64, 1.) In a saddle conformation, alternate pyrrole rings are tilted up and down with respect to a least-squares plane through the 24 atoms of the porphyrin core and the meso carbon atoms lie in the least-squares plane. In a ruffled conformation, alternate pyrrole rings are twisted clockwise or counter-clockwise about the metal-nitrogen bond and the meso carbon atoms are altemately above or below the least-squares plane through the 24 atoms of the porphyrin core.
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    • note
    • 2 lengthen significantly to 2.03-2.04 Å with associated distances to the pyridines of 2.18-2.23 Å.
  • 76
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    • note
    • *) absorption band of the macrocycle will be shifted from the position in the ground electronic state due to the change in electron density at the metal. Whether the excited-state Soret band is blue or red shifted in the excited state will depend on electronic and structural differences with the ground state.
  • 77
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    • note
    • Such observations and conclusions concerning opposing Soret-region absorption changes and the effects on the amplitudes of features in the difference spectra are not uncommon for nickel porphyrins. Such effects no doubt contribute to the early-time spectral changes for NiDPP in toluene (Figure 5A) and have been discussed previously for NiT(t-Bu)P in noncoordinating solvents.
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    • References to additional representative Zn and free base nonplanar porphyrins. (a) Medforth, C. J.; Senge, M. O.; Smith, K. M.; Sparks, L. D.; Shelnutt, J. A. J. Am. Chem. Soc. 1992, 114, 9859. (b) Nurco, D. J.; Medforth, C. J.; Forsyth, T. P.; Olmstead, M. M.; Smith, K. M. J. Am. Chem. Soc. 1996, 118, 10918. (c) Barkigia, K. M.; Nurco, D. J.; Renner, M. W.; Melamed, D.; Smith, K. M.; Fajer, J. J. Phys. Chem. B 1998, 102, 322. (d) Senge, M. O. Z. Naturforsch 1999, 54b, 821. (d) Regev, A.; Galili, T.; Medforth, C. J.; Smith, K. M.; Barkigia, K. M.; Fajer, J.; Levanon, H. J. Phys. Chem. 1994, 98, 2520. (e) Barkigia, K. M.; Berber, M. D.; Fajer, J.; Medforth, C. J.; Renner, M.; Smith, K. M. J. Am. Chem. Soc. 1990, 112, 8851. (f) Ema, T.; Senge, M. O.; Nelson, N. Y.; Ogoshi, H.; Smith, K. M. Angew. Chem. Int. Ed. Engl. 1994, 33, 1879. (g) Senge, M. O.; Ema, T.; Smith, K. M. J. Chem. Soc., Chem. Commun. 1995, 733.
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    • References to additional representative Zn and free base nonplanar porphyrins. (a) Medforth, C. J.; Senge, M. O.; Smith, K. M.; Sparks, L. D.; Shelnutt, J. A. J. Am. Chem. Soc. 1992, 114, 9859. (b) Nurco, D. J.; Medforth, C. J.; Forsyth, T. P.; Olmstead, M. M.; Smith, K. M. J. Am. Chem. Soc. 1996, 118, 10918. (c) Barkigia, K. M.; Nurco, D. J.; Renner, M. W.; Melamed, D.; Smith, K. M.; Fajer, J. J. Phys. Chem. B 1998, 102, 322. (d) Senge, M. O. Z. Naturforsch 1999, 54b, 821. (d) Regev, A.; Galili, T.; Medforth, C. J.; Smith, K. M.; Barkigia, K. M.; Fajer, J.; Levanon, H. J. Phys. Chem. 1994, 98, 2520. (e) Barkigia, K. M.; Berber, M. D.; Fajer, J.; Medforth, C. J.; Renner, M.; Smith, K. M. J. Am. Chem. Soc. 1990, 112, 8851. (f) Ema, T.; Senge, M. O.; Nelson, N. Y.; Ogoshi, H.; Smith, K. M. Angew. Chem. Int. Ed. Engl. 1994, 33, 1879. (g) Senge, M. O.; Ema, T.; Smith, K. M. J. Chem. Soc., Chem. Commun. 1995, 733.
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    • References to additional representative Zn and free base nonplanar porphyrins. (a) Medforth, C. J.; Senge, M. O.; Smith, K. M.; Sparks, L. D.; Shelnutt, J. A. J. Am. Chem. Soc. 1992, 114, 9859. (b) Nurco, D. J.; Medforth, C. J.; Forsyth, T. P.; Olmstead, M. M.; Smith, K. M. J. Am. Chem. Soc. 1996, 118, 10918. (c) Barkigia, K. M.; Nurco, D. J.; Renner, M. W.; Melamed, D.; Smith, K. M.; Fajer, J. J. Phys. Chem. B 1998, 102, 322. (d) Senge, M. O. Z. Naturforsch 1999, 54b, 821. (d) Regev, A.; Galili, T.; Medforth, C. J.; Smith, K. M.; Barkigia, K. M.; Fajer, J.; Levanon, H. J. Phys. Chem. 1994, 98, 2520. (e) Barkigia, K. M.; Berber, M. D.; Fajer, J.; Medforth, C. J.; Renner, M.; Smith, K. M. J. Am. Chem. Soc. 1990, 112, 8851. (f) Ema, T.; Senge, M. O.; Nelson, N. Y.; Ogoshi, H.; Smith, K. M. Angew. Chem. Int. Ed. Engl. 1994, 33, 1879. (g) Senge, M. O.; Ema, T.; Smith, K. M. J. Chem. Soc., Chem. Commun. 1995, 733.
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    • References to additional representative Zn and free base nonplanar porphyrins. (a) Medforth, C. J.; Senge, M. O.; Smith, K. M.; Sparks, L. D.; Shelnutt, J. A. J. Am. Chem. Soc. 1992, 114, 9859. (b) Nurco, D. J.; Medforth, C. J.; Forsyth, T. P.; Olmstead, M. M.; Smith, K. M. J. Am. Chem. Soc. 1996, 118, 10918. (c) Barkigia, K. M.; Nurco, D. J.; Renner, M. W.; Melamed, D.; Smith, K. M.; Fajer, J. J. Phys. Chem. B 1998, 102, 322. (d) Senge, M. O. Z. Naturforsch 1999, 54b, 821. (d) Regev, A.; Galili, T.; Medforth, C. J.; Smith, K. M.; Barkigia, K. M.; Fajer, J.; Levanon, H. J. Phys. Chem. 1994, 98, 2520. (e) Barkigia, K. M.; Berber, M. D.; Fajer, J.; Medforth, C. J.; Renner, M.; Smith, K. M. J. Am. Chem. Soc. 1990, 112, 8851. (f) Ema, T.; Senge, M. O.; Nelson, N. Y.; Ogoshi, H.; Smith, K. M. Angew. Chem. Int. Ed. Engl. 1994, 33, 1879. (g) Senge, M. O.; Ema, T.; Smith, K. M. J. Chem. Soc., Chem. Commun. 1995, 733.
    • (1990) J. Am. Chem. Soc. , vol.112 , pp. 8851
    • Barkigia, K.M.1    Berber, M.D.2    Fajer, J.3    Medforth, C.J.4    Renner, M.5    Smith, K.M.6
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    • References to additional representative Zn and free base nonplanar porphyrins. (a) Medforth, C. J.; Senge, M. O.; Smith, K. M.; Sparks, L. D.; Shelnutt, J. A. J. Am. Chem. Soc. 1992, 114, 9859. (b) Nurco, D. J.; Medforth, C. J.; Forsyth, T. P.; Olmstead, M. M.; Smith, K. M. J. Am. Chem. Soc. 1996, 118, 10918. (c) Barkigia, K. M.; Nurco, D. J.; Renner, M. W.; Melamed, D.; Smith, K. M.; Fajer, J. J. Phys. Chem. B 1998, 102, 322. (d) Senge, M. O. Z. Naturforsch 1999, 54b, 821. (d) Regev, A.; Galili, T.; Medforth, C. J.; Smith, K. M.; Barkigia, K. M.; Fajer, J.; Levanon, H. J. Phys. Chem. 1994, 98, 2520. (e) Barkigia, K. M.; Berber, M. D.; Fajer, J.; Medforth, C. J.; Renner, M.; Smith, K. M. J. Am. Chem. Soc. 1990, 112, 8851. (f) Ema, T.; Senge, M. O.; Nelson, N. Y.; Ogoshi, H.; Smith, K. M. Angew. Chem. Int. Ed. Engl. 1994, 33, 1879. (g) Senge, M. O.; Ema, T.; Smith, K. M. J. Chem. Soc., Chem. Commun. 1995, 733.
    • (1994) Angew. Chem., Int. Ed. Engl. , vol.33 , pp. 1879
    • Ema, T.1    Senge, M.O.2    Nelson, N.Y.3    Ogoshi, H.4    Smith, K.M.5
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    • References to additional representative Zn and free base nonplanar porphyrins. (a) Medforth, C. J.; Senge, M. O.; Smith, K. M.; Sparks, L. D.; Shelnutt, J. A. J. Am. Chem. Soc. 1992, 114, 9859. (b) Nurco, D. J.; Medforth, C. J.; Forsyth, T. P.; Olmstead, M. M.; Smith, K. M. J. Am. Chem. Soc. 1996, 118, 10918. (c) Barkigia, K. M.; Nurco, D. J.; Renner, M. W.; Melamed, D.; Smith, K. M.; Fajer, J. J. Phys. Chem. B 1998, 102, 322. (d) Senge, M. O. Z. Naturforsch 1999, 54b, 821. (d) Regev, A.; Galili, T.; Medforth, C. J.; Smith, K. M.; Barkigia, K. M.; Fajer, J.; Levanon, H. J. Phys. Chem. 1994, 98, 2520. (e) Barkigia, K. M.; Berber, M. D.; Fajer, J.; Medforth, C. J.; Renner, M.; Smith, K. M. J. Am. Chem. Soc. 1990, 112, 8851. (f) Ema, T.; Senge, M. O.; Nelson, N. Y.; Ogoshi, H.; Smith, K. M. Angew. Chem. Int. Ed. Engl. 1994, 33, 1879. (g) Senge, M. O.; Ema, T.; Smith, K. M. J. Chem. Soc., Chem. Commun. 1995, 733.
    • (1995) J. Chem. Soc., Chem. Commun. , pp. 733
    • Senge, M.O.1    Ema, T.2    Smith, K.M.3
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    • note
    • The magnitudes of the absorbance changes also may be modulated during the final stages of the ligation process as a consequence of the structural, vibrational, and electronic relaxations within the six-coordinate photoproduct and readjustments in the surrounding solvent molecules and their interactions with the porphyrin. Such spectral changes may lead to diminished amplitudes of certain features in the spectrum (due to decreased extinction coefficients or increased overlap of opposing absorptions and bleachings) and complement diminished amplitudes derived from return of molecules to the original four-coordinated ground state via ligand loss.
  • 87
    • 0041723660 scopus 로고    scopus 로고
    • Unpublished results
    • 28DPP can modify the barriers for β-aryl rotation and macrocycle inversion. Medforth, C. J.; Nurco, D. J.; Smith, K. M. Unpublished results.
    • Medforth, C.J.1    Nurco, D.J.2    Smith, K.M.3


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