Figure 12.

Simulated contact/dipolar relaxation rates (longitudinal — R ₁, top and transverse — R ₂, bottom) as a function of magnetic field. The model represents a point paramagnetic centre with S=1 and ¹H located 1.57 Å away along either x‐axis (dotted lines) or z‐axis (dashed lines). The relaxation profile when no ZFS is present is shown in red, the case of axial ZFS with D=−56 cm⁻¹ is shown in blue and rhombic ZFS with an additional E=−13.8 cm⁻¹ is shown in green. The g‐tensor is assumed to be isotropic with g=2, and electron relaxation rate is 3.3×10¹⁰ s⁻¹.