Grupo de Espectroscopia Molecular (GEM), Edificio Quifima, Laboratorios de Espectroscopia y Bioespectroscopia, Parque Científico UVa, Unidad Asociada CSIC, Universidad de Valladolid, 47011 Valladolid, Spain.
J Chem Phys. 2017 Sep 28;147(12):124312. doi: 10.1063/1.4994799.
Laser ablation techniques coupled with broadband and narrowband Fourier transform microwave spectroscopies have allowed the high resolution rotational study of solid hydantoin, an important target in astrochemistry as a possible precursor of glycine. The complicated hyperfine structure arising from the presence of two N nuclei in non-equivalent positions has been resolved and interpreted in terms of the nuclear quadrupole coupling interactions. The results reported in this work provide a solid base for the interstellar searches of hydantoin in the astrophysical surveys. The values of the nuclear quadrupole coupling constants have been also discussed in terms of the electronic environment around the respective nitrogen atom.
激光烧蚀技术与宽带和窄带傅里叶变换微波光谱学相结合，使得对固体乙内酰脲的高分辨率旋转研究成为可能，乙内酰脲作为一种可能的甘氨酸前体，是天体化学中的一个重要目标。由于存在两个非等效位置的 N 核，产生了复杂的超精细结构，这些结构已经根据核四极矩耦合相互作用得到了解决和解释。本工作所报道的结果为在天体物理测量中在星际空间中搜索乙内酰脲提供了坚实的基础。还根据各自氮原子周围的电子环境讨论了核四极矩耦合常数的值。
