446822-25-9Relevant academic research and scientific papers
Stepwise sulfuration of the terminal phosphide complex trans- [PtCl(PHCy2)2(PCy2)]
Gallo, Vito,Latronico, Mario,Mastrorilli, Piero,Nobile, Cosimo Francesco,Ciccarella, Giuseppe,Englert, Ulli
, p. 2634 - 2641 (2007/10/03)
The terminal phosphido complex trans-[PtCl(PHCy2) 2(PCy2)] (1) has been prepared, exploiting the reversibility of the reaction with HCl, by action of 1,8-diazabicyclo[5.4.0] undec-7-ene (DBU) on [PtCl(PHCy2)3]Cl, and its reactivity towards elemental sulfur studied. The first product obtained by reaction of 1 with 1 equiv. of sulfur is trans-[PtCl(PHCy2)2{κP- P(S)-Cy2}] (2), which rapidly isomerises in halogenated solvents into cis-[PtCl(PHCy2)2{κP-P(S)Cy2}] (3). Further addition of sulfur causes the formation of a mixture of [Pt(κ2S,S′-PS2Cy2)-(PHCy 2)2]Cl (4) and [Pt(κ2S,S′-PS 2Cy2){κP-P(S)Cy2}(PHCy2)] (5), which could be selectively synthesised; the first upon sulfuration of pure 3 and the second by reaction of 4 with 1 equiv. of sulfur in the presence of DBU. Complex 5 can be further sulfurated to [Pt(κ2S,S′- PCy2S2)(κS-PCy2S2)(PHCy 2)] (6), which is fluxional in solution and was also characterised by single-crystal X-ray diffraction. Wiley-VCH Verlag GmbH & Co. KGaA, 2006.
(Phosphido)platinum complexes by sodium-promoted reaction of cis-PtCl2(PHCy2)2 - Synthesis and crystal structure of [trans-Pt(PCy2H)2(PCy2)Cl], a rare example of a terminal (phosphido)platinum(II) complex
Mastrorilli, Piero,Nobile, Cosimo F.,Fanizzi, Francesco P.,Latronico, Mario,Hu, Chunhua,Englert, Ulli
, p. 1210 - 1218 (2007/10/03)
cis-PtCl2(PHCy2)2 (1) reacts at 0°C in toluene with sodium metal to give the dinuclear PtI complexes cis-[(PHCy2)-(H)Pt(μ-PCy2)]2 (2) and [(PHCy2)(Cl)Pt(μ-PCy2)Pt (PHCy2)2]-(Pt-Pt) (3). On standing in solution, complex 3 isomerizes to trans-[(PHCy2)(Cl)Pt(μ-PCy2) 2Pt(PHCy2)(H)] (4). When treated with sodium at room temperature, complex 3 transforms into [Pt(μ-PCy2)(PHCy2)]2(Pt-Pt) (5). The sodium reduction of 1 carried out at room temperature leads to the direct formation of the phosphido bridged dinuclear complex [Pt(μ-PCy2)(PHCy2)]2(Pt-Pt) (5) along with the mononuclear platinum(II) complex [trans-Pt(PCy2H)2(PCy2)Cl] (6). Complex 6, which has also been obtained by reaction of 1 with LiPCy2, unambiguously shows by single-crystal X-ray diffraction the presence of a pyramidal terminal phosphido ligand. Wiley-VCH Verlag GmbH, 69451 Weinheim, Germany, 2002.
