G. Bond, M. Hellier
Mar 1, 1967
Citations
0
Influential Citations
30
Citations
Journal
Journal of Catalysis
Abstract
Abstract In the presence of hydrogen and a Pt II -Sn II complex, 1-pentene isomerizes at room temperature to a mixture of 2-pentenes in which the trans isomer predominates (~85%); the yield of this isomer increases with decreasing temperature. The rate of hydrogenation, which is slow, is proportional to the instantaneous concentration of 1-pentene, and virtually no hydrogenation occurs with cis -2-pentene. Styrene is hydrogenated slowly. The rates of both isomerization and hydrogenation are maximum at a Sn/Pt ratio of about 12. The reaction is thought to proceed by addition of 1-pentene to a hydride formed from trans -[Pt(SnCl 3 ) 2 2Cl 2 ] and hydrogen. The high trans/cis ratio in the 2-pentene formed is interpreted semiquantitatively by a confonnational analysis of the resulting 2-pentyl radical. Pentane is formed by hydrogenolysis of the 1-pentyl-Pt bond.