Influence of Electronically and Sterically Tunable Cinnamate Ligands on the Spectroscopic, Kinetic, and Thermodynamic Properties of Bis(triphenylphosphine)palladium(0) Olefin Complexes
作者:Magnus R. Buchner、Bettina Bechlars、Bernhard Wahl、Klaus Ruhland
DOI:10.1021/om200849n
日期:2012.1.23
A detailed study of the influence of electronic and steric characteristics of cinnamic acid esters on the spectroscopic, kinetic, and thermodynamic properties of bis(triphenylphosphine)palladium(0) cinnamic acid ester complexes is presented (51 different new complexes included). These complexes show a dynamic behavior on the NMR spectroscopic time scale. Therefore, the rotational barriers of the olefin
Investigation of two‐ and three‐bond carbon–hydrogen coupling constants in cinnamic acid based compounds
作者:Gregory K. Pierens、Taracad K. Venkatachalam、David C. Reutens
DOI:10.1002/mrc.4469
日期:2016.12
the direct 13CNMR experiments, respectively. The experimental values of the couplingconstants were compared with discrete densityfunctionaltheory (DFT) calculated values and were found to be in good agreement for the 3JHC. However, the DFT method under estimated the 2JHC couplingconstants. Knowing the limitations of the measurement and calculation of these multibond couplingconstants will add confidence