Dialkylpalladium(II) Complexes. Syntheses, Characterizations, and Reactions with CO, I2, and CH3I
- 1 May 1977
- journal article
- Published by Oxford University Press (OUP) in Bulletin of the Chemical Society of Japan
- Vol. 50 (5) , 1319-1327
- https://doi.org/10.1246/bcsj.50.1319
Abstract
The reaction of bis(acetylacetonato)palladium(II), [Pd(acac)2] with AlR2(OEt) in the presence of tertiary phosphine, L, in diethyl ether yields a series of dialkylpalladium(II) complexes, [PdR2L2], where R=Me, Et, and Prn; L=PEt3, PPh2Me, and 1/2Ph2PCH2CH2PPh2 (dpe). These complexes were characterized by means of elemental analysis, IR and 1H-NMR spectra and of some decomposition reaction such as thermolysis and acidolysis. The trans- and cis-configurations of [PdMe2L2] (L=PEt3 and PPh2Me, respectively) in solution were established on the basis of the 1H-NMR spectra. The examination of 1H-NMR spectra in the presence of tertiary phosphine suggests the ligand exchange processes promoted by the added phosphine. [PdR2L2] (L=PEt3 and PPh2Me) reacted with CO in toluene to yield the quantitative amounts of the corresponding dialkyl ketones. The reactions of the complexes [PdR2L2] with iodine afforded [PdI2L2] and RI, and of [PdR2(dpe)] with MeI gave CH3H, CH3CH3, R(–H), RH, R·CH3, R·R, and RI together with [PdI2L2], suggesting the presence of a quadrivalent, six-coordinate intermediate palladium species.This publication has 28 references indexed in Scilit:
- NMR studies of dynamic behavior of dialkyl(acetylacetonato)bis(tertiary phosphine)cobalt(III) and related complexes in solutionJournal of Organometallic Chemistry, 1976
- Preparation and properties of cis-dialkylcobalt complexes, CoR2(acac)(PR′3)2Journal of Organometallic Chemistry, 1976
- Methyl ligand transfer between platinum and palladium complexesRecueil des Travaux Chimiques des Pays-Bas, 1975
- Preparation and properties of ligand-free methylcopper and of copper alkyls coordinated with 2,2′-bipyridyl and tricyclohexylphosphineJournal of Organometallic Chemistry, 1974
- Preparation and Properties of Methylcopper-triphenylphosphine ComplexesBulletin of the Chemical Society of Japan, 1972
- Preparation and properties of alkylchromium dichloride complexesJournal of Organometallic Chemistry, 1972
- Activation of Iron-Alkyl Bonds in Dialkylbis (dipyridyl) iron(II) by Interaction with OlefinsBulletin of the Chemical Society of Japan, 1972
- Organo (dipyridyl) nickel complexes. I. Stability and activation of the alkyl-nickel bonds of dialkyl (dipyridyl) nickel by coordination with various substituted olefinsJournal of the American Chemical Society, 1971
- .sigma.-Alkyl or .sigma.-acyl isocyanide complexes of nickel(II) and palladium(II). Preparation and successive insertion reactionsJournal of the American Chemical Society, 1969
- Butadiene Polymerization Catalysts. Diethylbis(dipyridyl)iron and DiethyldipyridylnickelJournal of the American Chemical Society, 1965