Fan Xiaoyun, Pan Shilie, Hou Xueling, Liu Gang, Wang Jide
Xinjiang Technical Institute of Physics & Chemistry, Chinese Academy of Sciences, 40-1 South Beijing Road, Urumqi 830011, China.
Inorg Chem. 2009 Jun 1;48(11):4806-10. doi: 10.1021/ic802448z.
The synthesis, crystal structure, and characterization of the noncentrosymmetric semiorganic material (NH(4)).Sr[l-(+)-C(4)H(2)O(6).B(OH)(2)].4H(2)O were reported. Crystals were synthesized through slow evaporation at room temperature, utilizing SrCl(2).6H(2)O, C(4)H(4)O(6), H(3)BO(3), and NH(3).H(2)O 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) A, b = 7.0452(13) A, c = 7.0745(12) A, alpha = 85.351(5) degrees , beta = 77.678(5) degrees , gamma = 73.276(4) degrees , and Z = 1. It exhibits a two-dimensional layered structure along the c axis, consisting of SrO(9) polyhedra, BO(4) tetrahedra, tartrate molecules, NH(4)(+) cations, and H(2)O 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 KH(2)PO(4).
报道了非中心对称半有机材料(NH₄)₂Sr[L-(+)-C₄H₂O₆·B(OH)₂]·4H₂O的合成、晶体结构及表征。通过室温缓慢蒸发法，以SrCl₂·6H₂O、C₄H₄O₆、H₃BO₃和NH₃·H₂O为试剂合成了晶体，并通过单晶X射线衍射确定了其结构。它结晶于三斜晶系空间群P1(编号1)，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)°，Z = 1。沿c轴呈现二维层状结构，由SrO₉多面体、BO₄四面体、酒石酸盐分子、NH₄⁺阳离子和H₂O分子组成。还对报道的材料进行了红外光谱、紫外可见漫反射光谱、热分析和二次谐波产生(SHG)测试。使用1064 nm辐射进行的非线性光学测量表明，该材料具有SHG特性，其效率约为KH₂PO₄的1.5倍。
