The 341-nm band system of pyridine N-oxide: Assignment of the out-of-plane fundamentals期刊界 All Journals 搜尽天下杂志传播学术成果专业期刊搜索期刊信息化学术搜索

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The 341-nm band system of pyridine N-oxide: Assignment of the out-of-plane fundamentals

Authors:	HD Bist JS Parihar JCD Brand

Institution:	Department of Physics, Indian Institute of Technology, Kanpur-16, U.P., India;Department of Chemistry, University of Western Ontario, London, Ontario N6A 5B7 Canada

Abstract:	Analysis of the 341-nm bands of pyridine N-oxide vapor has been extended to the out-of-plane modes of the molecule in the $X ?^{1} A_{1}$ and $A ?^{1} B_{2}$ states. Data for the ground state are obtained primarily from infrared and Raman measurements; using this information, the excited-state out-of-plane manifold is then built up by the assignment of overtone, sequence, and cross-sequence bands observed in the electronic absorption spectrum. These assignments lead to a complete set of a₂ and b₁ fundamental frequencies in the $A ?$ and $X ?$ states, though some questions cannot be fully resolved, and the uniqueness of the assignments is briefly discussed.

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