- 作者: 林寬鋸 ; 林宏洲 ; 李光華
- 作者服務機構: 中央研究院化學研究所
- 中文摘要: Crystals of two alkali-metal tin(IV) arsenates, KSnOAsO/sub 4/ and RbSnOAsO/sub 4/, were grown from a flux and structurally characterized by single-crystal X-ray diffraction. Crystal data: KSnOAsO/sub 4/, orthorhombic, Pna2/sub 1/ (No.33), a=13.406(3 ).ANG., b=6.678(1).ANG., c=10.921(2).ANG., Z=8, R=0.037 for 1173 independent reflections with 1>2.5.sigma.(I); RbSnOAsO/sub 4/, as above except a=13.567(3).ANG., b=6.791(1).ANG., c=10.891(2).ANG., R=0.035 for 1958 independent reflections. The two compounds are isostructural with the nonlinear optical material KTiOPO/sub 4/. The oxygen frameworks of both tin compounds approximate closely to a centrosymmetric arrangement, as indicated from the analysis of atomic coordinates. Second harmonics were generated in powdered RbSnOAsO/sub 4/ to confirm the absence of a center of symmetry in the structure.
- 英文摘要: --
- 中文關鍵字: Arsenate; Tin; Structure; Second Harmonic Generation; Synthesis; Single Crystal X-Ray Diffraction
- 英文關鍵字: 砷酸鹽;錫;結構;二次簡諧產生;合成;單晶X-射線繞射