Semiorganic Nonlinear Optical Material: Preparation and Properties of (NH4)·Sr[l-(+)-C4H2O6·B(OH)2]·

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• 作者：Xiaoyun Fan ; Shilie Pan ; Xueling Hou ; Gang Liu ; Jide Wang
• 刊名：Inorganic Chemistry
• 出版年：2009
• 出版时间：June 1, 2009
• 年：2009
• 卷：48
• 期：11
• 页码：4806-4810
• 全文大小：868K
• 年卷期：v.48,no.11(June 1, 2009)
• ISSN：1520-510X

文摘

The synthesis, crystal structure, and characterization of the noncentrosymmetric semiorganic material (NH₄)·Sr[l-(+)-C₄H₂O₆·B(OH)₂]·4H₂O were reported. Crystals were synthesized through slow evaporation at room temperature, utilizing SrCl₂·6H₂O, C₄H₄O₆, H₃BO₃, and NH₃·H₂O as reagents, and its structure was determined by single-crystal X-ray diffraction. It crystallizes in the triclinic space group P1 (No. 1) with a = 6.4633(10) Å, b = 7.0452(13) Å, c = 7.0745(12) Å, α = 85.351(5)°, β = 77.678(5)°, γ = 73.276(4)°, and Z = 1. It exhibits a two-dimensional layered structure along the c axis, consisting of SrO₉ polyhedra, BO₄ tetrahedra, tartrate molecules, NH₄⁺ cations, and H₂O molecules. IR spectroscopy, UV−vis diffuse-reflectance spectroscopy, thermal analysis, and second-harmonic generation (SHG) were also performed on the reported material. Nonlinear optical measurements, using 1064 nm radiation, indicate that the material has SHG properties, with an efficiency of approximately 1.5 times that of KH₂PO₄.