The orientational distribution function for the C-CD3bond on the perdeuterated polymethacrylate chain of a liquid-crystalline side group polymer was determined in the frozen SAphase by solid-state2H NMR. The results are compared with the ones of two similar systems recently reported. The slow chain dynamics above the glass transition was studied via 2D2H NMR, which indicates a diffusive motion constrained by the partial orientational order of the mesophase.