MoO_2(S_2CNEt_2)_2在不同有机溶剂中的紫外可见吸收光谱研究

The Study of Ultra Visible Spectra for MoO_2(S_2CNEt_2)_2 in Various Organic Solvent

本文研究MoO_2(S_2CNEt_2)_2在不同有机溶剂中的可见、紫外吸收光谱,在苯类溶剂中,该化合物呈现二个吸收谱带:在卤代烷溶剂中则呈现三个吸收谱带,本文讨论了两类吸收谱带之间的关系,研究了谱带最大吸收峰波长与溶剂性质之间的关系。实验发现,最强谱带的最大吸收波长倒数1/λ与(n^2-1)/(2n^2+1)存在较好线性关系,对于最长波的谱带,本实验结合动态的可见、紫外扫描谱和动力学实验结果,认为它是属于Mo=O键的电子跃迁谱带。

This paper is concerned with the visible ultra absorption spectra of Mo02(S2CNEt2)2 in various organic solvents. The linear correlation was found between the inverse of wavelengths for the strongest absorption bands and the function of refractive index (n2-l)/(2n2 + l) for MoO2(S2CNEt2)2 in the solvents.The scan of spectra in the process of reaction between MoO2(S2CNEt2)2 and PPh3 provided to confirm that the longest wavelength peak may be attributable to charge transfer band of Mo = O bond.