Instituto de Física Fundamental (IFF-CSIC), Group of Molecular Astrophysics, C/ Serrano 121, Madrid 28006, Spain.
Departamento de Química Física y Química Inorgánica, Facultad de Ciencias, Universidad de Valladolid, Paseo de Belén 7, Valladolid 47011, Spain.
Spectrochim Acta A Mol Biomol Spectrosc. 2022 Apr 5;270:120844. doi: 10.1016/j.saa.2021.120844. Epub 2022 Jan 3.
Dinitriles with a saturated hydrocarbon skeleton and a -C≡N group at each end can have large electric dipole moments. Their formation can be related to highly reactive radicals such as CHCN, CN, or CN. Thus, these saturated dinitriles are potential candidates to be observed in the interstellar medium. In this work, two members of this family, hexanedinitrile and heptanedinitrile, have been investigated through their rotational spectra. The jet-cooled broadband chirped-pulse Fourier transform microwave spectra of both molecules were measured in the 2-8 GHz frequency region. Three and six conformers of hexanedinitrile and heptanedinitrile, respectively, were detected and assigned based on the rotational and quadrupole coupling constants.
具有饱和烃骨架和两端 -C≡N 基团的二腈可以具有较大的电偶极矩。它们的形成可以与高反应性自由基（如 CHCN、CN 或 CN）相关。因此，这些饱和二腈是星际介质中可能被观察到的潜在候选物。在这项工作中，通过旋转光谱研究了这个家族的两个成员，己二腈和庚二腈。在 2-8 GHz 的频率范围内测量了这两种分子的喷射冷却宽带啁啾脉冲傅里叶变换微波光谱。基于旋转和四极耦合常数，分别检测到并分配了己二腈和庚二腈的三个和六个构象。
