Abstract
A series of [Rh(ppz)2(N^N)]+ complexes (ppz− is the deprotonated form of 1-phenylpyrazole and (N^N) is ethylenediamine, 2,2′-bipyridyl, 1,10-phenanthroline, 4,7-diphenyl-1,10-phenanthroline, and 2,2′-biquinoline) is obtained and characterized by 1H NMR spectroscopy, electronic absorption and emission spectroscopy, and cyclic voltamperometry. A 0.75-V anodic shift of the ligand-centered reduction potentials of complexes compared to free heterocyclic (N^N) ligands is observed. The vibrationally structured luminescence spectra of complexes are attributed to intraligand spin-forbidden optical transitions localized on the {Rh(N^N)} metal-complex fragments.
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Original Russian Text © E.V. Ivanova, M.V. Puzyk, K.P. Balashev, 2009, published in Optika i Spektroskopiya, 2009, Vol. 107, No. 1, pp. 107–111.
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Ivanova, E.V., Puzyk, M.V. & Balashev, K.P. Spectral, luminescent, and electrochemical properties of cyclometalated complexes of Rh(III) based on 1-phenylpyrazole with ethylenediamine and heterocyclic diimines. Opt. Spectrosc. 107, 101–105 (2009). https://doi.org/10.1134/S0030400X09070145
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DOI: https://doi.org/10.1134/S0030400X09070145