Mixed-ligand complexes of Pt(II) and Pd(II) with 2-phenylbenzothiazole |
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Authors: | O A Rodionova M V Puzyk and K P Balashev |
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Institution: | (1) Herzen State Pedagogical University, St. Petersburg, 191186, Russia |
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Abstract: | The mixed-ligand cyclometalated M(Bt)(μ-Cl)]2 and (M(N∧N))(Bt)]+ complexes (M = Pd(II), Pt(II); Bt? is the deprotonated form of 2-phenylbenzothiazole; and ( N∧N) is ethylenediamine (En) and orthophenanthroline (Phen)) are studied and described by 1H NMR spectroscopy, electronic absorption and emission spectroscopy, and voltammetry. The one-electron reduction of complexes is attributed to the electron transfer to the π * orbitals of both diimine and cyclometalated ligands. The long-wavelength absorption bands and vibrationally structured luminescence bands are assigned to optical transitions that are localized mainly on the M(Bt) metal-complex fragment. |
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