Zerovalent palladium and platinum complexes containing rigid bidentate nitrogen ligands and alkenes: synthesis, characterization, alkene rotation and substitution reactions. X-ray crystal structure of [Bis((2,6-diisopropylphenyl)imino)acenaphthene](maleic

摘要: A number of zerovalent palladium and platinum M(NN)(alkene) complexes, containing the rigid bidentate nitrogen ligands bis(arylimino)acenaphthene (Ar-BIAN) bis(phenylimino)camphane (Ph-BIC) have been synthetized characterized. Stable complexes were obtained with electron poor alkenes, such as dimethyl fumarate, fumaronitrile, maleic anhydride, tetracyanoethylene. Complexes bearing asymmetric Ar-BIAN or Ph-BIC occurred mixtures isomers. From IR, UV, 1 H 13 C NMR spectroscopy from substitution reactions it was concluded that back-donation density metal to alkene is major factor determining stability