机译:新型V2O5层SIGMA-ZN0.25V2O5-CENTER-DOT-H2O的合成与晶体结构
: a = 10.614(2) Angstrom, b = 8.031(3) Angstrom, c = 10.7688(9) Angstrom, alpha = 90.65(1)degrees, beta = 91.14(1)degrees, gamma = 90.09(2)degrees, and Z = 8, The structure was solved and refined to R/R(w) = 0.079/0.048 for 1580 reflections with I > 3 sigma(I), which consists of V2O5 layers stacking along the c axis and interstitial hydrated Zn2+ ions. The V2O5 layer adopts a novel polyhedral framework built up of VO6 octahedra, VO5 trigonal bipyramids, and VO4 tetrahedra, When projected parallel to the ab plane, the V2O5 layer is described by the atomic sheet model in a manner similar to the V2O5 layer of delta phase such as delta-AgxV2O5, that is, a double-sheet type composed of two V2O5 sheets facing each other. The interstitial Zn atom forms a ZnO6 octahedron with two apical oxygens of the VO4 tetrahedra on opposide sides and with four coplanar water molecules. The anhydrous sigma phase was obtained by heating the hydrate up to 200 degrees C accompanied by the contraction in layer spacing from 10.76 to 8.92 Angstrom. (C) 1996 Academic Press, Inc. [References: 19]
:a = 10.614(2)埃,b = 8.031(3)埃,c = 10.7688(9)埃,alpha = 90.65(1)度, beta = 91.14(1)度,gamma = 90.09(2)度,Z = 8,对结构进行求解并细化为R / R(w)= 0.079 / 0.048,以进行1580次反射,其中I> 3 sigma(I),它由沿c轴堆叠的V2O5层和间隙水合Zn2 +离子组成。 V2O5层采用由VO6八面体,VO5三角双锥体和VO4四面体构成的新型多面体框架,当平行于ab平面投影时,V2O5层由原子薄层模型描述,类似于三角洲的V2O5层相,例如delta-AgxV2O5,即由两张彼此面对的V2O5薄片组成的双薄片类型。间隙中的Zn原子形成ZnO6八面体,在相反侧带有VO4四面体的两个顶氧,并带有四个共面的水分子。通过将水合物加热至200摄氏度并伴随着层间距从10.76至8.92埃的收缩,获得无水σ相。 (C)1996 Academic Press,Inc. [参考:19]
Hydrated vanadium-oxides; Pentoxide; Bronzes;
机译:新型V2O5层SIGMA-ZN0.25V2O5-CENTER-DOT-H2O的合成与晶体结构
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