Gaseous Products from Interactions of Recoil Carbon-11 Atoms with Liquid Hydrocarbons^1a

Reactions of accelerated carbon ions and atoms with benzene. Product distribution as a function of charge and kinetic energy

“…-x, = (5.19 ± 0.12) X IQ-6 erg/(G2 mole). These small anisotropies for FC=CH and CH3C=CH are in sharp contrast to the large anisotropy estimated for the -C=CH group from proton chemical shift data.29,30 Our results also seem to indicate that Xx -Xj¡ in acetylene is considerably smaller than predicted by other estimates.31 activity located in the ring.46 Considerable strides have been made toward an understanding of the effects of recoiling carbon atoms on benzene through more recent work of Voigt,5 6 Wolf,7 Wolfgang,8 and their collaborators. It is an intriguing problem to visualize how the new molecule of benzene-14C is formed by interaction with the incoming 14C atom or ion.…”

Recoil chemistry of carbon-11 in C5 hydrocarbons, fragmentation and stabilization

“…The gaseous products studied in this laboratory were generally separated using gas-solid chromatography (28). Due to reactions of acetylene with these columns, it was desirable to find a liquid phase which would give as good a separation.…”

Reactions of Recoil11C Atoms with Benzene

“…Especially in the case of aromatic compounds, the reaction mechanisms are not particularly well understood. Four classes of com-pounds are known to be formed from liquid benzene (yields are averages [2][3][4][5][6][7][8][9][10][11][12]): gases (10%), monomers (12%), dimers (25%), trimers and higher polymers (53%).…”