¹H/¹⁵N chemical shift correlated spectrum of a ¹⁵N-acetyl-valine crystal
Riqiang Fu (NHMFL)

¹H/¹⁵N chemical shift correlated spectrum of a ¹⁵N-acetyl-valine crystal sample obtained on the 900 with (Top) and without (Bottom) ¹⁵N decoupling during the ¹H chemical shift evolution in the t₁ domain. The ¹H linewidth obtained here was 1.2 ppm, while it was 2.1 ppm from the same crystal sample at 300 MHz. Without ¹⁵N decoupling, the corresponding ¹H-¹⁵N dipolar couplings split each of the resonances into two peaks.

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