SYNTHESIS OF C-60[PD(PPH3)(2)] AND ITS CATALYTIC PERFORMANCE FOR CYCLIZATION OF 1-HEPTENE

The transition metal complex C-60[Pd(PPh3)(2)] was prepared successful ly in N-2 atmosphere free of water and oxygen and characterized by fou rier transform infrared (FTIR), XPS and C-13 NMR. The catalytic conver sion of 1-heptene was investigated using this new complex as the catal yst. It was found that the complex C-60[Pd(PPh3)(2)] could actively ca talyze the cyclization of 1-heptene into 1,2-dimethyl-cyclopentane. Ho wever, the complex Pd(PPh3)(4) showed only the activities of hydrogena tion and isomerization, instead of cyclization. It is believed that th e cyclization of 1-heptene is contributing to the coordination of C-60 With Pd(PPh3)(2), but that this coordination does not arise from the mechanical mixing of C-60 and Pd(PPh3)(4). (C) 1998 Elsevier Science B .V.