FT-IR Study of the Solid State Polymerization of Acetylene under Pressure

摘要: High-pressure infrared spectra were measured in a diamond anvil cell at room temperature and pressures up to 13.7 GPa. Transitions from liquid crystalline cubic orthorhombic phase observed the molecular 0.7 1.0 GPa, respectively. Polymerization occurred 4.2 accompanied by appearance of new peaks indicating formation CC double saturated C−C single bonds. The bonds showed an increase quantity on further compression beyond 4 while no significant change. spectrum reaction product recovered 14 GPa indicated cross-linked polymers containing trans- cis-CC