Rhodium(I) complexes of α-keto-stabilised 1,2- bis (diphenylphosphino)alkane mono ylides
作者： D. Saravanabharathi , T. S. Venkatakrishnan , M. Nethaji , S. S. Krishnamurthy
DOI: 10.1007/BF02708264
关键词:
摘要: Rhodium(I) complexes of the hybrid ylide-phosphine ligands, $Ph_2P(CH_2)_nPPh_2(CHC(O)C_6H_5)$ (n = 1: dppm-yl, or 2: dppe-yl) have been synthesized from $[Rh(\mu-Cl)(COD)]_2$ (COD 1,5-cyclooctadiene) and characterized by NMR spectroscopic X-ray structural methods. The dppe-yl behaves as an ambidentate ligand; it functions a monodentate P-donor ligand with dangling ylidic carbon in neutral chloro complex, [(COD)Rh(Cl)(dppe-yl)] (1), whereas replacement chloride non-coordinating counter anion results formation complexes, $[(COD)Rh(L-L')]^+$ (L-L' (2) dppm-yl (3)) respectively which ligands are bonded to metal via phosphorus atoms. 1,5- cyclooctadiene (COD), present Rh(I) precursor, remains intact products. structures 1, 2 3 confirmed crystallography.
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