Abstract
Complexes [Pd(bt)(4,4′-bpy)OOCCH3], [Pd(bt)NO3]2(m-4,4′-bpy), [Pd(bt)(m-4,4′-bpy)]4(NO3)4 (bt− is deprotonated form of 2-phenylbenzothiazole, bpy is 4,4′-bipyridyl) are prepared and characterized by 1H NMR, electron absorption and emission spectroscopy, as well as by voltammetry. The upfield shift of the signal of proton in the ortho-position to the donor carbon atom of the cyclopalladated ligand in the complexes [(Δδ = −(1.1–1.5) ppm] is assigned to the anisotropic effect of the ring current of the pyridine rings of the 4,4′-bipyridyl moiety, which are orthogonal to the coordination plane. Characteristic longwave absorption bands λ = (387±4) nm and the low-temperature phosphorescence bands λ = (512±3) nm in the complexes are assigned to the chromophore {Pd(bt)} metal complex fragment. The reduction waves in the complexes [E 1/2 = −(1.54±0.04) and E p = −(1.83±0.03) V] are assigned to the ligand-centered processes of the successive electron transfer to the π* orbitals localized predominantly on the coordinated pyridine components of the 4,4′-bipyridyl moiety.
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Dupont, J., Consorti, C.S., and Spencer, J., Chem. Rev., 2005, vol. 105, no. 6, p. 2527.
Steel, P.J., Acc. Chem. Res., 2005, vol. 38, no. 4, p. 243.
Wurthner, F., You, C.-C., and Saha-Moller, C.R., Chem. Soc. Rev., 2004, vol. 33, no. 3, p. 133.
Uehara, K., Kosai, K., and Mizuno, M., Inorg. Chem., 2010, vol. 49, no. 4, p. 2008.
Bercaw, J.E., Durrell, A.C., Gray, H.B., Green, J.C., Hazari, N., Labinger, J.A., and Winkler, J.R., Inorg. Chem., 2010, vol. 49, no. 4, p. 1801.
Panova, A.G. and Balashev, K.P., Zh. Obshch. Khim., 2010, vol. 80, p. 1523.
DeArmond, M. and Carlin, C., Coord. Chem. Rev., 1985, vol. 63, p. 325.
Puzyk, M.V, Farus, O.A., Rodionova, O.A., and Balashev, K.P., Optics and Spectroscopy, 2007, vol. 102, no. 4, p. 514.
Barigelletti, F., Sandrini, D., Maestri, M., Balzani, V., von Zelewsky, A., Chassot, L., Jolliet, P., and Maeder, U., Inorg. Chem., 1988, vol. 27, no. 20, p. 3644.
Lai, S.-W., Chan, M.C.-W., Peng, S.-M., and Che, C.M., Angew. Chem. Int. Ed., 1999, vol. 38, no. 5, p. 669.
Vasil’ev, V.V., Balashev, K.P., Shagisultanova, G.A., Optika i Spektroskopiya, 1983, vol. 54, no. 5, p. 876.
Kotlyar, V.S. and Balashov, K.P., Russ. J. Electrochem. Engl. Transl., 1996, vol. 32, no. 11, p. 1253.
Panova, A.G. and Balashev, K.P., Russ. J. Gen. Chem., 2010, vol. 80, no. 2, p. 372.
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Original Russian Text © A.G. Panova, K.P. Balashev, 2011, published in Zhurnal Obshchei Khimii, 2011, Vol. 81, No. 4, pp. 656–660.
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Panova, A.G., Balashev, K.P. Cyclopalladated complexes of 2-phenylbenzothiazole with 4,4′-bipyridyl. Russ J Gen Chem 81, 747–750 (2011). https://doi.org/10.1134/S1070363211040220
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DOI: https://doi.org/10.1134/S1070363211040220