✍ Scribed by Sandip Dey; Vimal K. Jain; Jaspreet Singh; Veena Trehan; Kuldip K. Bhasin; Babu Varghese
No coin nor oath required. For personal study only.
The reaction of py~2~Te~2~ or (3‐MeC~5~H~3~N)~2~Te~2~ with Na~2~PdCl~4~ in methanol yields an insoluble brown complex, [PdCl(TeNC~5~H~3~R)]~n~ (R = H or Me). Several reactions of pyTe^−^, (3‐MeC~5~H~3~N)Te^−^, or (6‐MeC~5~H~3~N)Te^−^ with various palladium(II) and platinum(II) complexes have been carried out. Complexes of the types [MCl(Te−N)(PR~3~)], [Pt(Te−N)~2~(dppe)], [Pt(Te−N)~2~(PPh~3~)~2~], and [Pt~2~(μ‐Te−N)~2~(dppe)~2~][BPh~4~]~2~ [M = Pd or Pt; Te−N = pyTe, (3‐ or 6‐MeC~5~H~3~N)Te] have been prepared and characterized by elemental analyses, UV/Vis, IR, and NMR (^1^H, ^31^P, ^195^Pt) spectroscopy. The complexes [MCl(Te−N)(PR~3~)] show irreversible oxidation and reduction by CV in DMF. The molecular structure of [PdCl{Te(3‐MeC~5~H~3~N)}(PPh~3~)] (2c) has been established by single‐crystal X‐ray diffraction analysis. The palladium atom is bound to the chelating 3‐methylpyridinetellurolate ligand, a chlorine atom and a PPh~3~ ligand. The pyrolysis of [PdCl{Te(3‐MeC~5~H~3~N)}(PR~3~)] (PR~3~ = PEt~3~ or PPh~3~) at 340 °C yields PdTe. (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2003)
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