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MAMARDASHVILI et al.
672). EAS (benzene), λmax, nm (logε): 549 (4.11), 435
(5.37). Found, %: C 66.73; H 3.41; N 7.06.
C44H28N4BrCoCH3OH. Calculated, %: C 67.46; H
3.60; N 7.15.
00204-P), using the equipment of the Upper Volga
Regional Center of Physicochemical Research.
REFERENCES
Co(III)(Br)-5,10,15,20-Tetraphenylporphyrin (2a)
was prepared by adding 0.5 mL of a bromine solution
(5 drops of bromine per 5 drops of benzene or
chloroform) to a solution of compound 1 (0.02 g in
15 mL of benzene or chloroform) and held for several
hours. Compound 2a is stable in solution, but it is
partially reduced to complex 1 when recovered from
1. Falk, J., Porphyrins and Metalloporphyrins,
Amsterdam: Elsevier, 1964.
2. Schmid, R. and McDonagh, A., The Porphyrins, New
York: Academic Press, 1979, vol. 6.
3. Berezin, B.D., Enikolopyan, N.S., Metalloporfiriny
(Metalloporphyrins), Moscow: Nauka, 1988.
4. Boyle, R.W. and Dolphin, D., Photochem. Photobiol.,
1996, vol. 64, no. 3, p. 469. doi 10.1111/j.1751-
1097.1996.tb03093.x
5. O’Connor, A.E., Gallagher, W.M., and Byrne A.T,
Photochem Photobiol., 2009, vol. 85, no. 5, p. 1053. doi
10.1111/j.1751-1097.2009.00585.x
6. Moser, S., Müller, T., Oberhuber, M., and Kräutler B.,
Eur. J. Org. Chem., 2009, no. 1, p. 21. doi 10.1002/
ejoc.200800804
7. Müller, T., Rafelsberger, M., Vergeiner, C., and
Kräutler, B., Angew. Chem. Int. Ed., 2011, no. 50,
p. 10724. doi 10.1002/anie.201103934
1
the reaction mixture. H NMR spectrum (CDCl3), δ,
ppm: 16.05 br.s (8H, pyrrole), 13.20 br.s (8H, Ho),
8.20 t (8H, Hm, J = 7.7 Hz), 8.01 br.s (4H, Hn). Mass
spectrum, m/z (Irel, %): 751.1 (60) [M – H]+, 671.1 (97)
[M – Br]+ (calculated for C44H28N4Co: 672). EAS
(benzene), λmax, nm: 548, 428.
Co(III)(diimidazole)-5,10,15,20-Tetraphenylpor-
phyrin (2c). a. It was prepared by reacting an air-
saturated (non-degassed) solution of porphyrin 1
(0.0013 mg in 20 mL of benzene) with imidazole
(0.014 mg) at room temperature.
8. Montellano, P.R., Acc. Chem. Res., 1998, vol. 31, no. 9,
p. 543. doi 10.1021/ar960207q
b. It was prepared by spectrophotometric titration
of a solution of complex 2b (1×10–5 M) in benzene
with an imidazole solution (5·10–3 M). Mass spectrum,
m/z (Irel, %): 671.3 (60) [M – H]+, 136 (100) [2Im]+
(calculated for C44H28N4Co: 672). EAS (benzene),
λmax, nm (logε): 440 (5.43), 555 (4.13).
9. Gozzelino, R., Jeney, V., and Soares, M.P., Annu. Rev.
Pharmacol. Toxicol., 2010, no. 50, p. 323. doi 10.1146/
annurev.pharmtox.010909.105600
10. Sugishima, M., Sakamoto, H., Higashimoto, Y., Omata, Y.,
Hayashi, Sh., Noguchi, M., and Fukuyama, K., J. Biol.
Chem., 2002, vol. 277, p. 45086. doi 10.1074/
jbc.M207267200
11. Sugishima, M., Sakamoto, H., Higashimoto, Y.,
Noguchi, M., and Fukuyama, K., J. Biol. Chem., 2003,
vol. 278, p. 32352. doi 10.1074/jbc.M303682200
12. Lad, L., Schuller, D., Friedman, J., Li, H., Montelano, P.R.,
and Poulos, T.L., J. Biol. Chem., 2003, vol. 278,
p. 7834. doi 10.1074/jbc.M211450200
The kinetic parameters of the investigated reaction
were obtained according to the procedure described in
[34]. The effective rate constants (keff) were deter-
mined from the change in the optical density of the
solution at working wavelengths (λ 410–418 nm) at
definite time intervals using a formally first-order
equation (8) with excess of dicumol peroxide and
imidazole.
13. Lissi, E.A., Pizarro, M., Aspee, A., and Romay, C., Free
Radical Biology & Medicine, 2000, vol. 28, no. 7,
p. 1051. doi 10.1016/S0891-5849(00)00193-3
keff = 1/τlog (c0/cτ).
(8)
14. Simonova, O.R., Zaitseva, S.V., and Koifman, O.I.,
Russ. J. Gen. Chem., 2014, vol. 84, no. 1, p. 108. doi
10.1134/S1070363214010174
15. Simonova, O.R., Zaitseva, S.V., and Koifman, O.I.,
Russ. J. Gen. Chem., 2014, vol. 84, no. 12, p. 2429. doi
10.1134/S1070363214120135
16. Simonova, O.R., Zaitseva, S.V., and Koifman, O.I.,
Russ. J. Gen. Chem., 2014, vol. 86, no. 6, p. 1322. doi
10.1134/S1070363216060177
Here, c0 and cτ are the concentrations of the complex at
times 0 and τ, respectively. The values of kv, keff and
the mean deviation evaluations were optimized using
Microsoft Excel and ggh.exe (QB-45) software using
the Guggenheim method. The relative error was about
5–10%.
ACKNOWLEDGMENTS
17. Simonova, O.R., Zaitseva, S.V., and Koifman, O.I.,
Russ. J. Inorg. Chem., 2012, vol. 57, no. 6, p. 903. doi
10.1134/S0036023612060204
The work was performed with a financial support
from the Russian Science Foundation (grant no. 23-
RUSSIAN JOURNAL OF GENERAL CHEMISTRY Vol. 88 No. 6 2018