group P21/n. The asymmetric unit consists of two formula units, one of which shows positional disorder. The shortest intermolecular contacts form a medium strong hydrogen bond of the type C–H · · · O. The IR and Raman spectra, measured in the region 50–3500 cm–1, are in agreement with predictions based on the X-ray structural data. The observed electron absorption bands have been attributed to transitions
在环境温度下已经确定了4-
氯-2,6-二甲基-3-
碘吡啶N-氧化物的晶体结构。该化合物以单斜晶结构,空间群P 2 1 / n结晶。不对称单元由两个公式单元组成,其中一个显示位置混乱。最短的分子间接触形成C–H···O型的中等强度氢键。IR和拉曼光谱在50–3500 cm –1范围内测量与基于X射线结构数据的预测一致。观察到的电子吸收带归因于单重态能级之间的跃迁,而发射源自激发的三重态能级和基态单重态能级之间的跃迁。解释了将最强的吸收带(225–242 nm)分成三个部分的原因是
碘原子价壳扩展(d轨道共振)的结果。