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• 作者：Arthur G. Maki p>amaki1@compuserve.comp>
• 关键词：Cyanogen ; High-resolution ; Infrared spectrum ; Vibrational constants ; Rotational constants ; NCCN ; Absorption intensities
• 刊名：Journal of Molecular Spectroscopy
• 出版年：2012
• 期刊代码：129_00222852
• 类别：ch
• 出版时间：March, 2012
• 卷：273
• 期：Complete
• 页码：16-25
• 文件大小：577 K

摘要

High-resolution spectra of two monoisotopically substituted and two triisotopically substituted species of cyanogen have been measured from 490 to 3000 cmp>鈭?p>. A total of 19 vibrational states for p>14p>Np>13p>Cp>12p>Cp>14p>N, 12 vibrational states for p>15p>Np>13p>Cp>12p>Cp>15p>N, 17 vibrational states for p>15p>Np>12p>Cp>12p>Cp>14p>N, and 5 vibrational states for p>15p>Np>13p>Cp>13p>Cp>14p>N were measured, most for the first time. The 谓₁ bands, which are allowed for these C_鈭瀡 molecules, were observed and their relative intensities were measured and compared with ab initio calculations. The 谓₁ transitions of p>14p>Np>13p>Cp>12p>Cp>14p>N were 47 times weaker than those of 谓₃ and the 谓₁ transitions of p>15p>Np>12p>Cp>12p>Cp>14p>N were even weaker by a factor of 4.1. Other C_鈭瀡 allowed transitions, 谓₄ and 谓₃ + 谓₅, were also observed and their intensities were compared to the intensities of transitions allowed under the D_鈭瀐 selection rules that apply to the most abundant cyanogen molecule, p>14p>Np>12p>Cp>12p>Cp>14p>N.