Computer-assisted study of characteristics of water clusters in the presence of nitrogen dioxide

Abstract

; however, only two of them, nitrogen(II) oxide and nitrogen(IV) oxide, are stable under ordinary conditions and actively participate in the natural and industrial nitro� gen cycles. Nitrogen oxides ( ) are of great impor� tance for many atmospheric reactions. radical is the most reactive of them; it is formed in the dark and is regulated by the chemical reactions occurring in the night atmosphere. When interacting with water, nitro� gen oxides form nitric acid ( ), which is not only the main component of acid rain, but also governs the main process of removing nitrogen oxides from atmo� sphere. Nitric acid plays the key role in the chemistry of polar stratosphere. It is involved in the formation of ozone holes. Nitrogen oxides directly participate in the formation and decomposition of the tropospheric ozone. Under the action of sunlight, nitrogen dioxide is transformed into monoxide NO, which, in turn, forms by interacting with oxygen. Ozone and peroxide radicals are also involved in this cycle. The physical properties of nitrous oxide ( ), which is one of the most prevailing greenhouse gases, has been studied in greatest detail. The dielectric properties and IR spectra of water clusters interacting with nitrous oxide molecules ( ) were investigated in [1, 2]. The uptake of nitrogen monoxide (NO) mol� ecules by water clusters and their structure and stabil� ity were considered in [3], while the absorption, reflection, and emission spectra were studied in [4, 5]. 2 NO ,NO, 23 NO , 2 NO , 25 NO