98717-40-9Relevant academic research and scientific papers
Palladium(II) complexes of diphenylvinyl- and phenyldivinylphosphine
Rahn, Jeffrey A.,Holt, Mark S.,O'Neil-Johnson, Mark,Nelson, John H.
, p. 1316 - 1320 (2008/10/08)
Palladium(II) complexes of the ligands L = Ph2PCH=CH2 and PhP(CH=CH2)2 have been prepared and characterized by elemental analysis, infrared spectroscopy, and 1H, 1H{31P}, 13C{1H}, 31P{1H}, and 1H/13C HETCOR nuclear magnetic resonance spectroscopy. These complexes exist as temperature-dependent equilibrium mixtures of cis and trans isomers in solution. Equilibrium thermodynamics for the isomerization process cis-L2PdX2 ? trans-L2PdX2, determined by variable-temperature 31P{1H} NMR spectroscopy, demonstrate that the cis isomers are in general thermodynamically more stable than the trans isomers. However, the relative isomer stabilities are anion dependent with the trans isomer becoming more stable in the order Cl a vinylphosphine to palladium(II) strongly polarizes the C=C double bond as evidenced by 13C NMR data.
