We report the ¹H $T_1$ dispersion curve between 0 and 5 ​MHz for the synthetic opioid fentanyl citrate (C₂₈H₃₆N₂O₈). The structures in the curve can be used to estimate the ¹⁴N nuclear quadrupole resonance (NQR) frequencies of the material. Density functional theory predictions of the NQR parameters of several fentanyl citrate compounds are also reported. The predictions for the aniline nitrogen are consistent with structures in the observed $T_1$ data. To help interpret the fentanyl citrate results the $T_1$ dispersion curve for the explosive ammonium nitrate is also presented.

中文翻译：

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在¹ ^ h${Ť}_{\mathrm{1个}}$ 柠檬酸芬太尼的弥散曲线以识别NQR参数

我们报告¹ H${Ť}_{\mathrm{1个}}$合成阿片类柠檬酸芬太尼（C ₂₈ H ₃₆ N ₂ O ₈）在0至5 MHz之间的色散曲线。曲线中的结构可用于估计材料的¹⁴ N核四极共振（NQR）频率。还报道了几种柠檬酸芬太尼化合物的NQR参数的密度泛函理论预测。苯胺氮的预测与观察到的结构一致${Ť}_{\mathrm{1个}}$数据。为了帮助解释柠檬酸芬太尼的结果，${Ť}_{\mathrm{1个}}$ 还给出了爆炸性硝酸铵的分散曲线。