The 1 + 1 and 2 + 2 resonant multiphoton ionization of allyl and allyl-dn (C3H5, C3H4D, C3HD4, and C3D5) radicals
摘要:
The 1 + 1 and 2 + 2 resonant multiphoton ionization (MPI) spectra of isotopomers of the allyl radical are recorded with partial rotational resolution. Symmetry arguments and rotational contour analysis are used to identify the distortion that leads to a double-well potential in the B[1(2)A1] excited state. While nominally the 3s Rydberg state, the B[1(2)A1] excited state differs markedly from the allyl cation. Vibrational frequencies in the ground and electronically-excited states are also determined.
Synthesis of new deuterated lipid probes for membrane fluidity measurements
摘要:
New phosphatidylcholine analogs have been synthesized in order to be used as probes for membrane fluidity measurements in H-2-NMR experiments. A 1,3-asymmetrical diether glycerophosphatidylcholine pentadeuterated at the glycerol moiety is elaborated starting from propiolic acid in a 8-steps procedure whereas the corresponding monodeuterated compound is prepared from epibromohydrin.
Hydride transfer mechanism in the catalytic allylation of norbornadiene with allyl formate
作者:S. A. Durakov、R. S. Shamsiev、V. R. Flid、A. E. Gekhman
DOI:10.1007/s11172-018-2361-7
日期:2018.12
formate in the presence of the palladium catalytic systems is characterized by several peculiarities associated with the new reaction route: hydroallylation (reductive allylation) occurs along with the traditional allylation (oxidative allylation). Both processes are considered from the single point of view, and the mechanism assuming different routes of the hydride transfer in the key intermediates
New phosphatidylcholine analogs have been synthesized in order to be used as probes for membrane fluidity measurements in H-2-NMR experiments. A 1,3-asymmetrical diether glycerophosphatidylcholine pentadeuterated at the glycerol moiety is elaborated starting from propiolic acid in a 8-steps procedure whereas the corresponding monodeuterated compound is prepared from epibromohydrin.
The 1 + 1 and 2 + 2 resonant multiphoton ionization of allyl and allyl-dn (C3H5, C3H4D, C3HD4, and C3D5) radicals
作者:David W. Minsek、Peter Chen
DOI:10.1021/j100152a050
日期:1993.12
The 1 + 1 and 2 + 2 resonant multiphoton ionization (MPI) spectra of isotopomers of the allyl radical are recorded with partial rotational resolution. Symmetry arguments and rotational contour analysis are used to identify the distortion that leads to a double-well potential in the B[1(2)A1] excited state. While nominally the 3s Rydberg state, the B[1(2)A1] excited state differs markedly from the allyl cation. Vibrational frequencies in the ground and electronically-excited states are also determined.