Na8[Zn4Ge8O18(OH)12]·2H2O: An interrupted-framework zincogermanate built from [GeO3(OH)] and [Ge2(OH)2] units
Na8[Zn4Ge8O18(OH)12]·2H2O: An interrupted-framework zincogermanate built from [GeO3(OH)] and [Ge2(OH)2] units
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DOI：
10.1039/b004668j
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发表时间：
2001
影响因子：
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通讯作者：
B. Reisner;A. Tripathi;J. Parise
中科院分区：
文献类型：
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作者：
B. Reisner;A. Tripathi;J. Parise
以二氧化锗、醋酸锌和氢氧化钠为原料，合成了一种新的层状锗酸盐Na8[Zn4Ge8O18(OH)12]·2H2O。室温单晶X射线衍射数据表明：该晶体为正交晶系，a=13.036(3)A，b=8.7286(17)A，c=12.938(3)A，空间群Pbcn(NO.60)，Z=4。由[GeOn(OH)4−n](n=1，2)组成的正交四环链连接在锌中心，形成一个新的四面体片状结构，其中包含分叉的10元环和唯一的构造块[Geon(OH)4 Getn](n=1，2)。锌锗酸盐片沿c轴堆积，并通过Na-O静电相互作用和由结合水分子和端羟基阴离子组成的氢键网络连接。
A new layered germanate, Na8[Zn4Ge8O18(OH)12]·2H2O, has been synthesized from an aqueous solution containing germanium dioxide, zinc acetate and sodium hydroxide. Room temperature single crystal X-ray diffraction data indicate an orthorhombic cell with a = 13.036(3) A, b = 8.7286(17) A, c = 12.938(3) A, space group Pbcn (no. 60), and Z = 4. Chains of orthogonal four-rings, consisting of corner-sharing [Ge2Zn2] units bridged at the zinc centers, are connected to form a new tetrahedral sheet structure containing bifurcated 10-membered rings and the unique building blocks, [GeOn(OH)4 − n] (n = 1, 2). The zincogermanate sheets are stacked along the c-axis and connected both by Na–O electrostatic interactions and a hydrogen bonding network composed of bound water molecules and terminal hydroxide anions.