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新硼酸盐Sr6YSc(BO3)6晶体的制备和结构
Preparation and Crystal Structure of a New Borate Sr6YSc(BO3)6
【摘要】 由硝酸锶、氧化钇、氧化钪、氧化硼加热,固相反应制得Sr6YSc(BO3)6晶体。经单晶X射线衍射分析,该晶体属三方晶系,空间群C3i2-R,按六方晶系定轴,a=12.284(1),c=9.268(2);V=1211.2 3,Z=3,Dc:4.16g/cm3,λ(MoKa)=0.71069,μ=231.36cm-1,F(000)=1386(e)。用1085个衍射数据做分析,最终偏差因子R=0.039,Rto=0.043。在光致发光中观察到此晶体比之Cr3+:ScBO3有70nm的蓝移,说明得到了一个较强的晶体场。
【Abstract】 The title compound, Sr6YSc(BO3)6, (Mr=1012. 43) was prepared from Sr(NO3)2, Y2O3, Sc2O3 and B2O3. The crystal structure was determined by single crystal X-ray diffraction analysis at room temperature(23℃). The crystal belongs to trigonal space group R 3,a = 12. 284(1) ,c= 9. 268(2) (?) (hexagonal axes), V = 1211. 2(?)3 ,Z = 3,Dc=4. 16g/cm3, the final residuals R =0. 039 and Rw = 0. 043 for 1085 observed reflections. A blue-shift relative to Cr3+ :ScBO3 by 70nm was observed from the peak of luminescene bands of the title compound. This suggested a stronger crystal field is obtained.
- 【文献出处】 结构化学 ,Chinese Journal of Structural Chemistry , 编辑部邮箱 ,1992年03期
- 【被引频次】1
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