EPR spectra from "EPR-silent" species: High-field EPR spectroscopy of manganese(III) porphyrins

Journal of the American Chemical Society

Volumn 119, Issue 37, 1997, Pages 8722-8723

  Goldberg, David P ^a   Telser, Joshua ^b   Krzystek, J ^c   Montalban, Antonio Garrido ^d   Brunel, Louis Claude ^d   Barrett, Anthony G M ^c   Hoffman, Brian M ^a  

^a NORTHWESTERN UNIVERSITY   (United States)

^b ROOSEVELT UNIVERSITY   (United States)

^c FLORIDA STATE UNIVERSITY   (United States)

^d IMPERIAL COLLEGE LONDON   (United Kingdom)

Author keywords

[No Author keywords available]

Indexed keywords

HEMATOPORPHYRIN MANGANESE; PORPHYRIN DERIVATIVE;

ANALYTIC METHOD; ARTICLE; COMPLEX FORMATION; DRUG DETERMINATION; ELECTRON SPIN RESONANCE; TECHNIQUE;

EID: 0030984055     PISSN: 00027863     EISSN: None     Source Type: Journal    
DOI: 10.1021/ja971169o     Document Type: Article

References (33)

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16. Abbreviations used are as follows: TPP, 5, 10, 15, 20-tetraphenylporphyrinato; ODMAPz, 2, 3, 7, 8, 12, 13, 17, 18-octakis(dimethylamino)porphyrazinato; DTC, diethyldithiocarbamato.
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19. Brunei, L. C. et al. Manuscript in preparation.
20. Compound 1 was purchased from Porphyrin Products, Inc., Logan, UT. Full details of the preparation of 2 and 3, including single-crystal structure determinations, are described elsewhere. Goldberg, D. P.; Montalban, A. G.; White, A. J. P.; Williams, D. J.; Barrett, A. G. M.; Huffman, B. M. Inorg. Chem. Submitted. Sample size 1 to 3 mg.
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22. The field plotted (H, ) is that of the peak maximum (derivative zerocrossing point in Figure 1). The experimental line shapes are not welldefined because they are mixtures of absorption and dispersion and may reflect passage effects.
23. 1. This change is necessary to obtain a correct energy level diagram as shown in Figure 2a.
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27. || for 1 is surprisingly low and needs further investigation.
28. 2/D].
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32. Behere, D. V.; Mitra, S. Inorg. Chem. 1980, 19, 992-995. In this work a single-crystal susceptibility measurement was also performed, and the sign of D was determined to be negative.
33. The manganese ion sits only 0.09 Å out of the plane of the pyrrolic nitrogen atoms in 1 (see: Boucher, L. J. In Coordination Chemistry of Macrocyclic Compounds; Melson, G. A., Ed.; Plenum: New York, 1979; p 527 and references therein), but is displaced 0.33 (0.34) A in 2 (3) (see ref 15).