The evolution of brittle fracture in a material can be conveniently investigated by means of the phase-field technique introducing a smooth crack density f
TTaabbllee11..1133CC--NNMMRR ((440000 MMHHzz)) aanndd 11HH--NNMMRR ((440000 MMHHzz)) ssppeeccttrraall ddaattaa ooff aaffffiinniinn.. H H1 δppm δpp-m C 166.15C 12 2 3 3 44 5.80 (1H, br d,-J = 16.0, 8.0 Hz) 566..88.8000((1(11HHH, ,,bddrtdt,,,JJJ===111666.0...