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由Ｈ４ＧｅＭｏ１２－ｎＷｎＯ４０·ｍ Ｈ２Ｏ（ｎ＝ ０， ９， １１， １２）和Ｎ－甲基吡咯烷酮合成，随后在ＣＨ３ＣＮ 和水中结晶，制成了一系列分子组成为［ＮＭＰＨ］４ＧｅＭｏ１２－ｎＷｎＯ４０·ＣＨ３ＣＮ的电荷转移化合物。并用元素分析、红外光谱、电子光谱进行了表征。结果表明在该系列化合物中， Ｎ－甲基吡咯烷酮通过Ｎ原子与酸中的质子结合成阳离子而与阴离子成盐；固体中阴离子和阳离子之间存在强的相互作用；化合物在光照下发生分子内电荷转移， 导致阳离子的氧化和阴离子的还原；ＥＳＲ结果表明阴离子还原反应处于单电子阶段； 非线性光学性质研究表明， 随着化合物分子内钨取代数的增多， 化合物倍频效应增强，三阶非线性系数增大
Synthesized from H4GeMo12-nWnO40 · m H2O (n = 0, 9, 11, 12) and N-methylpyrrolidone and subsequently crystallized from CH3CN and water to prepare a series of compounds of the molecular formula [NMPH] 4GeMo12-nWnO40 · CH3CN Charge transfer compounds. It was characterized by elemental analysis, infrared spectrum and electron spectrum. The results show that in this series of compounds, N-methylpyrrolidone and the proton in the acid by the N atom into a cation salt with the anion; solid anion and cation there is a strong interaction between the compounds occurred in the light intramolecular The charge transfer results in the oxidation of the cation and the reduction of the anion. The ESR results show that the anion reduction reaction is in the single electron stage. The nonlinear optical properties show that the compound frequency doubling effect increases with the increase of tungsten substitution number in the molecule, Linear coefficient increases