Infrared Absorption by Symmetrical NO3 Free Radical in the Gas Phase
Infrared Absorption by Symmetrical NO3 Free Radical in the Gas Phase
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DOI：
10.1063/1.1696797
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发表时间：
1965-07
影响因子：
4.4
通讯作者：
F. Cramarossa;H. Johnston
中科院分区：
文献类型：
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作者：
F. Cramarossa;H. Johnston
在低压 N2O5-O3 系统中，在 80 米光程池中观察到了 1325 至 1375 cm−1 之间的新红外吸收带。在此类系统中，对称 NO3 自由基的存在因其可见吸收光谱而众所周知，其以 Kss[N2O5]13[O3]13 的不寻常方式变化。新的红外波段的频率正好低于对称平面硝酸根离子反对称拉伸的频率；吸收光密度变化为[N2O5]13[O3]13；新的吸收被归因于对称的NO3自由基。
A new infrared absorption band between 1325 and 1375 cm−1 has been observed in the N2O5–O3 system at low pressure in an 80‐m path‐length cell. In such systems the presence of the symmetrical NO3 free radical is well known in terms of its visible absorption spectrum, which varies in the unusual way of Kss[N2O5]13[O3]13. The new infrared band lies at a frequency just below that for the antisymmetric stretch of the symmetrical planar nitrate ion; the absorption optical density varies as [N2O5]13[O3]13; and the new absorption has been assigned to the symmetrical NO3 free radical.