Pyrolysis of ortho-cyanotoluene and PCl3 mixtures: the millimeter and submillimeter-wave spectrum of NCCCCP

✍ Scribed by L. Bizzocchi; C. Degli Esposti

• Publisher: Elsevier Science
• Year: 2003
• Tongue: English
• Weight: 116 KB
• Volume: 221
• Category: Article
• ISSN: 0022-2852
• DOI: 10.1016/s0022-2852(03)00206-6

✦ Synopsis

The unstable NCCCCP molecule has been detected in the pyrolysis products of phosphorus trichloride and ortho-cyanotoluene mixtures. Its rotational spectrum has been investigated in the millimeter and submillimeter-wave regions for the ground and various vibrationally excited states which approximately lie below 400 cm À1 , namely (v 8 ; v 9 Þ ¼ ð0; 1Þ; ð0; 2Þ; ð0; 3Þ; ð0; 4Þ; ð1; 0Þ, and ð1; 1Þ. Transitions up to J ¼ 241 240 were measured for the ground state, making a precise evaluation of the sextic centrifugal distortion constant possible. The l-type resonances between the different sublevels of the bending states have been taken into account in the analysis of the spectra, which yielded accurate determinations of the x Lð99Þ and x Lð89Þ anharmonicity constants.