Various representations of the resulting 3D spectrum:
A cube representation of the 3D spectrum: A projection view of the spectrum: H-CO plane A projection view of the spectrum: H-N plane A projection view of the spectrum: N-CO plane

       Details:

Pulse sequence: standard Bruker pulse sequence hnco3d modified to replace selective shaped pulses on carbon with hard pulses.

Spin system: consists of 6 nuclei: Two isolated pairs of ¹H-¹⁵N-¹³CO systems, ¹H signals at 7 and 9 ppm, ¹⁵N at 109 and 111 ppm, and ¹³C at 159 and 161 ppm, respectively; the scalar couplings were set to J_NH = 92 Hz, J_NCO = 15 Hz.

Spectrometer frequency: 500.13 MHz (¹H)

Acquisition: 16 increments in t1 x 32 increments in t2 x 32 complex points in t3, 2 scans per data point

Processing details: 2x zero filling, apodization using 90^o shifted sinebell, TPPI in both indirect dimensions