Numerical data and functional relationships in science and technology New series Group 2, Molecules and radicals Vol. 20. Molecular constants : mostly from infrared spectroscopy Subvol. B5 Linear triatomic molecules : CS 2 (SCS), CS 2 + (SCS +), CS 2 ++ (SCS ++), CSe 2 (SeCSe), C 2 N (CCN), C 2 N (CNC), C 2 N + (CCN +), C 2 N + (CNC +)