The charge transfer complexes, [Fe(C5H5)2H]3PW12O40(Ⅰ)， [Fe(C5H5) 2H]4SiW12O40(Ⅱ) and [Fe(C5H5)2H]4GeW12O40(Ⅲ), have been synthesized from organic donor ferrocene [Fe(C5H5)2] and inorganic acceptor Keggin structure HnXW12O40.mH2O(X=P, Si, Ge) by one step solid state reaction at room temperature and characterized by elemental analysis, reflectance spectroscopy, FT-IR, XRD, ESR measurements, Mossbauer spectra and CV. The results indicate that the anions of the heteropoly acids remain unchanged in the charge tranfer complexes formation. The nonlinear optical property measurements indicate the second harmonic generation intensity of the three charge transfer complexes: IⅠ^2ω=0.27I~KDP, IⅡ^2ω=0.06 I~KDP, IⅢ^2ω=0.10 I~KDP, and the third-order susceptibility is χⅠ^(3)=2.4×10^-^13 esu, χⅡ^(3)=3.1×10^-^12 esu, χⅢ^(3)=6.5×10^-^12 esu.

Key words: FERROCENE, TUNGSTIC ACID, PHORSPHORIC ACID, SILICIC ACID, CHARGE TRANSFER COMPLEX, SOLIDPHASE SYNTHESIS, ELEMENTAL ANALYSIS, INFRARED SPECTROPHOTOMETRY