IR and H-1-NMR investigations for molecular interactions between methyl methacrylate and methylcyanoacetate

The molecular interactions between methyl methacrylate (MMA) end methyl Cya noacetate (MCA) has been studied The IR results show lower electron density fa vinyl a well a fa the carbonyl double bond of methyl methacrylate a the concentration of methylcyanoacetate increases in the solution The H-1-NMR data also coinside with the results of IR investigations. These results lea d to the conclusions that a cyclic structure of MMA-MCA complex is formed b y the interaction of the oxygen of the carbonyl group and active hydrogen t om of MCA with methylene group of the vinyl double bond md oxygen of the ca rbonyl group of the MMA respectively. This cyclic structure facilitate the abstraction of H alpha atom in MCA by MMA rad formation of transition radic al which after rearrangement can start the polymerization reaction.