96483-10-2Relevant academic research and scientific papers
Syntheses, characterization, and properties of palladium(II) complexes containing bidentate phosphine-nitrile or phosphine-imidate ligands
Habib, Mohammad,Trujillo, Horeb,Alexander, Catherine A.,Storhoff, Bruce N.
, p. 2344 - 2349 (2008/10/08)
The reactions of H2PdX4 (X = Cl, Br) with Ph2PCH2CH(CH3)CN, Ph2P(CH2)2CN, or Ph2P(o-C6H4CN) (L) in a 1.0:2.1 mole ratio yield the corresponding trans-PdX2L2 complexes in which the L groups function as monodentate phosphines. For the case in which L = Ph2PCH2CH(CH3)CN, both 31P and 13C NMR measurements indicate the presence of approximately equal quantities of each diastereomer. For the latter two ligands, complexes of stoichiometry [LPdX2]2 are also readily obtained. For the Ph2P(o-C6H4CN)-based dimers, IR and NMR data are consistent with halogen-bridged formulations. Similary obtained data from the Ph2P(CH2)2CN-containing dimers indicate the presence of more than one isomer. These data are rationalized on the basis of halogen-bridged and ligand-bridged dimers that interconvert rapidly on the NMR time scale. The nitrile groups in all the dimeric complexes react with alcohols (methanol and/or ethanol) to yield the corresponding chelated phosphine-imidate complexes.
