Figure 3.

(Top) High-resolution ¹⁵N NMR spectra of free (¹⁵N_free) and bound (¹⁵N_bound) ¹⁵N-Py signals after application of SLIC/dc-SABRE{¹H} with v₁ = 5 Hz, n=20 and v_rf − v(¹⁵N_bound)=−17 Hz (red) or −7 (black) at T = 15 ^oC,. (Bottom) Normalized polarization level of SLIC/dc-SABRE{¹H} (green circles) and SLIC-SABRE{¹H} (blue squares) as a function of v_rf − v(¹⁵N_bound). Green lines are the result of quantitative SABRE model for [IrH₂S₂] complex with S = ¹⁵N and ${k^{\prime }}_d=14{\text{s}}^{-1}$ (solid line) or 60 s⁻¹ (dashed line). Arrows indicate the offsets corresponding to the spectra demonstrated above.