کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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1326412 | 977430 | 2007 | 10 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: About the different reactivity of dinuclear palladium and platinum compounds with trispyrrolylphosphine: Synthesis and X-ray crystallographic results of new palladium complexes containing P–pyrrolyl bonds About the different reactivity of dinuclear palladium and platinum compounds with trispyrrolylphosphine: Synthesis and X-ray crystallographic results of new palladium complexes containing P–pyrrolyl bonds](/preview/png/1326412.png)
The reaction of [Pt(μ-Cl)(κ,η2-COE-MeO)]2 (2) (COE-MeO = 2-methoxy-5-cycloocten-1-yl) with trispyrrolylphosphine yields [PtCl{P(pyrl)3}(κ,η2-COE-MeO)] (3), in contrast to the crown-cycle complex [Pd(μ-Cl) {P(pyrl)3}]8 (1) obtained with the analogous palladium complex. The different reactivity has been explained in terms of the higher lability of the carbon–carbon double bond in the starting palladium compound, as compared with the related platinum derivative. The reaction of 1 with the ligand 2-[(pyridin-2-ylmethylene)aminophenol], (HNN′O), in the presence of thalium salt and NEt3, yields the complex [Pd(κ3N,N′,O-py-CHN-C6H4O)(P(O)(pyrl)2)] (5), which contains, for the first time, a di(N-pyrrolyl)phosphonato-P ligand. Treatment of [PdCl(κ3N,N′,O-py-CHN-C6H4O)] with P(pyrl)3 gives the amido derivative [PdCl{κ3P,N,N-(P(pyrl)2-O-C6H4-N-CH(CH2-CO-CH3)-py)}] (7), which displays a N–Pd–P–O–C2 six-membered metallacycle. In addition, the latter compound has been able to insert an acetone molecule into its framework. The crystal structures of 5 and 7 were solved by X-ray diffraction analysis.
Pd and Pt complexes [M(μ-Cl)(κ,η2-COE-MeO)]2 (COE-MeO = 2-methoxy-5-cycloocten-1-yl) show different reactivity towards P(pyrl)3. The reactivity of the palladium complexes containing trispyrrolylphosphine has been investigated.Figure optionsDownload as PowerPoint slide
Journal: Journal of Organometallic Chemistry - Volume 692, Issue 18, 15 August 2007, Pages 3882–3891