449754-33-0Relevant academic research and scientific papers
Palladium(II) complexes containing P～N～O donors. Ligand effect of tridentate versus bidentate coordination on the oligomerization of ethylene
Shi, Ping-Yung,Liu, Yi-Hung,Peng, Shie-Ming,Liu, Shiuh-Tzung
, p. 3203 - 3207 (2002)
Palladium complexes containing the [(RO)nC6H5-nC=]N(C6H4PPh 2-o) (P～N～O) ligand were synthesized, and the hemilability of the coordinating oxygen donors toward the metal center was studied. In the case of oxygen being a ether functionality (R = Me), acetonitrile readily replaces the tridentate ether donor in [Pd(P～N～O)Me]BF4 (1) to yield [Pd(P～N～O)(MeCN)-Me]BF4 (2). The labile nature of the ether donor assists the complex 1 in catalyzing the oligomerization of ethylene. Presumably, the temporary coordination of the ether donor to the vacant site during migratory insertion suppresses the β-elimination, which allows the elongation of the alkyl chain.
