新的NLO化合物Ce(MoO2)(OH)(IO3)4由水热法在170℃下制备得到.X射线单晶结构分析表明,该化合物以极性空间群P21结晶,晶体学参数为:a=0.70144(8)nm,b=1.41554(10)nm,c=0.70969(6)nm,β=115.318(7)°,V=0.6369(1)nm3,Z=2.Ce(MoO2)(OH)(IO3)4的晶体结构是由八配位的Ce3+阳离子,高度畸变的MoO66-八面体,和碘酸根阴离子基团组成的复杂三维网所构成.分析其结构表明,含有Ⅰ(3)和Ⅰ(4)的碘酸根基团的孤电子对的合成方向指向极化轴b,从而导致晶体结构具有非中心对称性.此外,红外光谱进一步证实了MoO66-,IO3-基团和Mo-OH作用的存在.
参考文献
| [1] | Halasyamani PS.;Poeppelmeier KR. .Noncentrosymmetric oxides [Review][J].Chemistry of Materials,1998(10):2753-2769. |
| [2] | Kunz M.;Brown ID. .OUT-OF-CENTER DISTORTIONS AROUND OCTAHEDRALLY COORDINATED D(0) TRANSITION METALS[J].International Journal of Quantum Chemistry,1995(2):395-406. |
| [3] | Shehee TC.;Sykora RE.;Kang MK.;Halasyamani PS.;Albrecht-Schmitt TE. .Hydrothermal preparation, structures, and NLO properties of the rare earth molybdenyl iodates, RE(MoO2)(IO3)(4)(OH) [RE = Nd, Sm, Eu][J].Inorganic Chemistry: A Research Journal that Includes Bioinorganic, Catalytic, Organometallic, Solid-State, and Synthetic Chemistry and Reaction Dynamics,2003(2):457-462. |
| [4] | SHELX-1997:Program for Structure Refinement[S].University of Goettingen,Germany,1997. |
| [5] | Abrahams S C;Bernstein J L;Nassau K .Transition Metal Iodates.Ⅶ.Crystallographic and Nonlinear Optic Survey of the 4f-Iodates[J].Journal of Solid State Chemistry,1976,16:173-184. |
| [6] | Hector A L;Henderson S J;Levason W et al.Hydrothermal Synthesis of Rare Earth Iodates from the Corresponding Periodates[J].Zeitschrift Fur Anorganische Und Allgemeine Chemie,2002,628:198-202. |
| [7] | Nassau K;Shiever J W;Prescott B E .Transition Metal Iodates.I.Preparation and Characterization of the 3d Iodates[J].Journal of Solid State Chemistry,1973,7:186-204. |
| [8] | Range K J;Meister H;Klement U .Hochdruckumwandlungen yon Ce(Ⅲ)Orthovanadat(Ⅴ),CeVO4[J].Zeitschrift für Naturforschung,1990,45B:598-602. |
| [9] | Fallon G D;Gatehouse B M .The Crystal Structure of a Complex Cerium(Ⅲ)Molybdate Containing a Dimolybdate Chain,Ce2(MoO4 )2(Mo2 O7 )[J].Journal of Solid State Chemistry,1982,44:156-161. |
| [10] | Sykora RE.;Ok KM.;Halasyamani PS.;Albrecht-Schmitt TE. .Structural modulation of molybdenyl iodate architectures by alkali metal cations in AMoO(3)(IO3) (A = K, Rb, Cs): A facile route to new polar materials with large SHG responses[J].Journal of the American Chemical Society,2002(9):1951-1957. |
| [11] | Sykora R E;Wells D M;Albrecht-Schmitt T E .New Molybdenyl Iodates-hydrothermal Preparation and Structures of Molecular K2 MoO2(IO3 )4 and 2-dimensional Beta-KMoO3(IO3 )[J].Journal of Solid State Chemistry,2002,166:442-448. |
| [12] | Bean A C;Albrecht-schmitt T E .Cation Effects on the Formation of the One-dimensional Uranyl Iodates A2(H2O)(AE =Sr,Ba,Pb)[J].Journal of Solid State Chemistry,2001,161:416-423. |
| [13] | 臧和贵,张红,肖卫强,常新安,王希敏,张克从.非线性光学晶体多功能测试系统[J].人工晶体学报,1998(04):380-384. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%