The optical properties of phenazine, 5,10-dihydrophenazine, 1: 1 phenazhydrin, and 3: 1 phenazhydrin have been investigated, and ir, uv, and diffuse reflectance spectra are reported. The ir data indicate that the structures of the phenazhydrins resemble those of the parent compounds. The uv spectrum of 5,10-dihydrophenazine has a Λmax at 350 nm, which is not in agreement with a previously reported value of 325 nm. Absorption spectra of the reduced phenazine were also obtained via diffuse reflectance and a subtraction technique. Absorption in the visible region which is not present in the solution spectra is observed in the diffuse reflectance spectra of the phenazhydrins. The optical spectra of the four related compounds are collectively presented and discussed.

中文翻译：

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吩嗪、5,10-二氢吩嗪和吩嗪的光谱

已经研究了吩嗪、5,10-二氢吩嗪、1:1 吩嗪和 3:1 吩嗪的光学性质，并报告了红外、紫外和漫反射光谱。ir 数据表明，phenazhydrins 的结构类似于母体化合物的结构。5,10-二氢吩嗪的紫外光谱在 350 nm 处具有 Λmax，这与先前报道的 325 nm 值不一致。还通过漫反射和减法技术获得了还原吩嗪的吸收光谱。在非那嗪的漫反射光谱中观察到溶液光谱中不存在的可见光区吸收。四种相关化合物的光谱被集中呈现和讨论。