532438-66-7

Upstream product

• 83095-83-4 [platinum(II)dichloride(1,2-bis(diphenylphosphino)ethane)] 
• 25398-76-9 [platinum⁽⁰⁾bis(1,2-bis(diphenylphosphino)ethane)] 
• 505904-78-9 3,3'-dimethyl-2,2'-dipyridyl ditelluride 

Relevant academic research and scientific papers

Reactivity of dipyridyl ditellurides with (diphosphine)Pt0 and 2-pyridyltellurolates with (diphosphine)PtCl2 and isolation of different structural motifs of platinum(II) complexes

Oxidative addition reaction of dipyridyl ditellurides to [Pt 2(dppm)3] gave two types of complexes, [Pt{2-Te-C 5H3(3-R)N}2(dppm)] (1) and [Pt{PPh 2C(TeC5H3(3-R)N)2PPh 2}2] (2) (R = H or Me), in ～65 and ～20% yield, respectively. Both these complexes are also formed in the substitution reaction between [PtCl2(dppm)] and NaTeC5H3(3-R)N. Treatment of [Pt(dppe)2] with dipyridyl ditellurides yielded an oxidative addition product, [Pt{2-Te-C5H3(3-R)N} 2 (dppe)] (3) (R = H or Me), exclusively. In a substitution reaction of [PtCl2(dppe)] with NaTeC5H3(3-Me)N a complex of composition Pt{TeC5H3(3-Me)N}(dppe)Cl (4) wasformed. The reaction between either [Pt(dppp)2] and Te2(C 5H3(3-Me)N)2or [PtCl2(dppp)] and NaTeC5H3(3-R)N afforded a mixture of [Pt{2-Te-C 5H3(3-Me)N}2(dppp)] (5) and [Pt 3Te2(dppp)3]2+ (6), which were separated by column chromatography. All the complexes were characterized by elemental analyses and NMR (1H, 31P, 195Pt) spectroscopy. The molecular structures of [Pt{PPh2C(TeC 5H4N)2PPh2}2] and [Pt2{TeC5H3(3-Me)N}2(dppe) 2][BPh4]2 were established by single-crystal X-ray diffraction analyses. The bonding, charge transfer, and geometry of compounds [Pt{2-Te-C5H3(3-R)N}2(dppm)] (1), [Pt{PPh2C(TeC5H3(3-R)N)2PPh 2}2] (2), and [Pt3Te2(dppp) 3]2+ (6) have been analyzed through relativistic density functional calculations.

Pyridine- and 3-/6-methylpyridine-2-tellurolate complexes of palladium(II) and platinum(II)

The reaction of py2Te2 or (3-MeC5H3N)2Te2 with Na2PdCl4 in methanol yields an insoluble brown complex, [PdCI(TeNC5H3R)]n (R=H or Me). Several reactions of pyTe-, (3-MeC5H3N)Te-, or (6-MeC5H3N)Te- with various palladium(II) and platinum(II) complexes have been carried out. Complexes of the types [MCl(Te-N)(PR3)], [Pt(Te-N)2(dppe)], [Pt(Te-N)2(PPh3)2], and [Pt2(μ-Te-N)2(dppe)2] [BPh4]2 [M=Pd or Pt; Te-N = pyTe, (3- or 6-MeC5H3N)Te] have been prepared and characterized by elemental analyses, UV/Vis, IR, and NMR (1H, 31p, 195Pt) spectroscopy. The complexes [MCl(Te-N)(PR3)] show irreversible oxidation and reduction by CV in DMF. The molecular structure of [PdCl{Te(3MeC5H3N)}(PPh3)] (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 PPh3 ligand. The pyrolysis of [PdClTe(3MeC5H3N)}(PR3)] (PR3=PEt3 or PPh3) at 340 °C yields PdTe. Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2003.