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Volumn 102, Issue 19, 1998, Pages 3382-3397

Theoretical studies of steric effects on intraligand electron delocalization: Implications for the temporal evolution of MLCT excited states

Author keywords

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Indexed keywords


EID: 0001464126     PISSN: 10895639     EISSN: None     Source Type: Journal    
DOI: 10.1021/jp9805095     Document Type: Article
Times cited : (87)

References (55)
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    • note
    • 2-symmetric molecules 4-(2,6-dimethylphenyl)pyridine and 4-phenylpyridine cannot do this.
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    • note
    • This was determined by projecting the nuclei along the normal coordinates of the two imaginary frequencies determined by the frequency calculations. The molecular and electronic structure viewing program MOLDEN was used.
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    • Wavefunction, Inc.: 18401 Von Karman Ave, No. 370, Irvine, CA 92715
    • Molecular Orbitals for the SOMOs of these anions in their ground-state geometries were generated by the SPARTAN electronic structure calculation package: SPARTAN, version 4.0; Wavefunction, Inc.: 18401 Von Karman Ave, No. 370, Irvine, CA 92715, 1995. Using SPARTAN, single-point energy calculations were done with the appropriate UHF/6-31G(d) geometries determined from Gaussian 94 geometry optimization calculations. The appropriate molecular Orbitals were then generated from these single-point energy calculations.
    • (1995) SPARTAN, Version 4.0
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    • and references therein
    • The "structured" emission spectra correspond to data obtained on the bipyridyl complexes in a glass matrix, e.g., 2-MeTHF. It is possible that coupling to low-frequency modes might be discerned in highly resolved spectra obtainable from low-temperature single-crystal measurements. See, for example: Yersin, H.; Humbs, W.; Strasser, J. Top. Curr. Chem. 1997, 191, 153, and references therein.
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    • Wavefunction, Inc.: 18401 Von Karman Ave, No. 370, Irvine, CA 92715
    • Molecular Orbitals for the SOMOs of these anions in their Franck-Condon-state geometries were generated by the SPARTAN electronic structure calculation package: SPARTAN, version 4.0; Wavefunction, Inc.: 18401 Von Karman Ave, No. 370, Irvine, CA 92715, 1995. Using SPARTAN, single-point energy calculations were done with the appropriate MP2/6-31G(d) geometry of the corresponding neutral determined from Gaussian 94 geometry optimization calculations. The appropriate molecular orbitals were then generated from these single-point energy calculations.
    • (1995) SPARTAN, Version 4.0
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    • note
    • Both the dpb and dotb systems will also exhibit an evolution in the extent of delocalization, evident from a comparison of Figure 6 with Figure 4. However, the effect should be most pronounced in the case of dmesb.


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