- The syntheses, 31P{1H} NMR spectra and cyclic voltammetry of trinuclear [Pd2M(μ3-Se)2(dppe)3] 2+ {M = Ni or Pt; dppe = 1,2-bis(diphenylphoshino)ethane}
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Trinuclear [Pd2M(μ3-Se)2(dppe)3] 2+ (M = Ni or Pt) and pentanuclear [M′{Pd2(μ3-Se)2(dppe)2} 2]2+ (M′ = Ni, Pd or Pt) clusters have been prepared using a metalloligand [Pd2(μ-Se)2(dppe)2] and characterized by 31P{1H} NMR spectroscopy and cyclic voltammetry. [Pd2Ni(μ3-Se)2(dppe)3] 2+ gives two chemically reversible couples, [Pd2Pt(μ3-Se)2(dppe)3] 2+ exhibits one chemically reversible couple and pentanuclear clusters show three couples in each cyclic voltammogram of the reduction process at 255 K. The redox behavior of the clusters is discussed.
- Matsumoto, Keiji,Kotoku, Naho,Shizuka, Takeshi,Tanaka, Rika,Okeya, Seichi
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- The reactions of [M(dppe)2] (M = Pd, Pt) with elemental selenium or tellurium: Preparation and structure of the platinum polyselenide [PtSe4 (dppe)]
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Reaction of [Pt(dppe)2] (dppe= 1,2-bis(diphenylphosphino)ethane) with elemental selenium in toluene under reflux, or of [PtCl2(dppe) ] with lithium polyselenide in tetrahydrofuran, leads in good yield to the complex [PtSe4(dppe)] whose structure has been determined by X-ray crystallography. Reaction of [Pt(dppe)2] with elemental tellurium, followed by treatment with dichloromethane, leads to isolation of the salt [Pt3(μ3-Te)2(dppe)3]Cl2. [Pd(dppe)2] reacts with elemental selenium to give [Pd2(μ-Se)2(dppe)2] or [Pd3(μ3-Se)2(dppe)3]C12, depending on the conditions. (C) 2000 Elsevier Science Ltd.
- Lewtas, Mark R.,Morley, Christopher P.,Di Vaira, Massimo
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p. 751 - 756
(2008/10/08)
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