A H-1 and C-13 solid state NMR investigation of the structure and molecular dynamics of hydrogenated oligocyclopentadiene

The structure and dynamics of hydrogenated oligo(cyclopentadiene ne) (HOCP) was investigated by means of H-1 and C-13 NMR in the solid state. The C-13 NMR spectrum of HOCP is reported and interpreted for the first time here. Quantitative information on the distribution of the different structural an d diastereoisomeric environments of the cyclopentane monomers was thus obta ined. Moreover, the dynamic behavior of HOCP was investigated through the m easurements of H-1 T-1 rho, and T-1, as well as C-13 T-1 relaxation times, highlighting the presence of two major motional processes, whose specific n ature is discussed. Quantitative dynamic parameters were extracted by apply ing suitable theoretical models to the H-1 T-1 curve vs temperature.