کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1328705 | 977619 | 2005 | 10 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Novel (η6-arene)-ruthenium(II) complexes containing bis(iminophosphorano)methanide and methandiide ligands Novel (η6-arene)-ruthenium(II) complexes containing bis(iminophosphorano)methanide and methandiide ligands](/preview/png/1328705.png)
The novel bis(iminophosphorano)methanes CH2[P{NP(S)(OR)2}Ph2]2 (R = Ph (1a), Et (1b)) have been obtained by oxydation of dppm with the corresponding thiophosphorylated azides (RO)2P(S)N3. Deprotonation of 1a,b with KH generates the methanide species KCH[P{NP(S)(OR)2}Ph2]2 (R = Ph (2a), Et (2b)). The ruthenium(II) dimer [{Ru(η6-p-cymene)(μ-Cl)Cl}2] reacts with 2a,b to afford the cationic complexes [Ru(η6-p-cymene)(κ3-C,N,S-CH[P{NP(S)(OR)2}Ph2]2)]+ (R = Ph (3a), Et (3b)), via selective κ3-C,N,S-coordination of the bis(iminophosphorano)methanide anions to ruthenium. The structure of [Ru(η6-p-cymene)(κ3-C,N,S-CH[P{NP(S)(OEt)2}Ph2]2)][PF6] (3b) has been confirmed by single-crystal X-ray crystallography. Deprotonation of complexes 3a,b with NaH leads to the neutral carbene derivatives [Ru(η6-p-cymene)(κ2-C,N-C[P{NP(S)(OR)2}Ph2]2)] (R = Ph (4a), Et (4b)).
Complexes [Ru(η6-p-cymene)(κ3-C,N,S-CH[P{NP(S)(OR)2}Ph2]2)][PF6] (A) and [Ru(η6-p-cymene)(κ2-C,N-C[P{NP(S)(OR)2}Ph2]2)] (B) have been prepared from the novel N-thiophosphorylated bis(iminophosphorano)methane ligands CH2[P{NP(S)(OR)2}Ph2]2 (R = Ph, Et), via deprotonation of the methylenic PCH2P unit.Figure optionsDownload as PowerPoint slide
Journal: Journal of Organometallic Chemistry - Volume 690, Issue 8, 15 April 2005, Pages 2087–2096