Infrared spectroscopy of ¹⁵ND₃: The ¦Í₂ and ¦Í₄ bending fundamental bands

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• 作者：Elisabetta Canè ; Gianfranco Di Lonardo ; Luciano Fusina ; ^{luciano.fusina@unibo.it} ; Giandomenico Nivellini ; Filippo Tamassia ; Mattia Villa
• 关键词：Ammonia ; 15ND3 ; High resolution infrared spectra ; Bending vibrations ; Rovibration analysis ; Fully deuterated ammonia
• 刊名：Journal of Quantitative Spectroscopy and Radiative Transfer
• 出版年：2013
• 出版时间：April, 2013
• 年：2013
• 卷：119
• 期：Complete
• 页码：1-11
• 全文大小：807 K

文摘

The infrared spectrum of the ammonia isotopologue ¹⁵ND₃ has been investigated by high resolution Fourier transform spectroscopy in the region from 450 to 1600 cm^?1. In total, 2217 transitions involving the (s) and (a) inversion-rotation-vibration levels have been identified and assigned to the ¦Í₂ and ¦Í₄ bending fundamentals. The assigned transitions have been fitted simultaneously using an inversion-rotation-vibration effective Hamiltonian which includes all symmetry allowed interactions between and within the excited state levels. The adopted model has been successful in rationalizing the complicated energy level pattern. Accurate values for the vibration and rotation spectroscopic constants, including 11 interaction coefficients, have been obtained for both inversion levels of the v₂=1 and v₄=1 states. The standard deviation of the fit, 0.00071 cm^?1, is about two times the estimated measurement precision.