Structure of the Mercury(II) Chromate(III) HgCr2O4 and Lattice Constants of the Isotypic Mercury(I) Compounds Hg2MoO4 and Hg2WO4
Structure of the Mercury(II) Chromate(III) HgCr2O4 and Lattice Constants of the Isotypic Mercury(I) Compounds Hg2MoO4 and Hg2WO4
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汞(II)铬(III) HgCr2O4的结构和同型汞(I)化合物Hg2MoO4和Hg2WO4的晶格常数
DOI：
10.1016/s0025-5408(97)00194-3
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发表时间：
1998
影响因子：
5.4
通讯作者：
W. Jeitschko
中科院分区：
文献类型：
--
作者：
A. Wessels;Ralf Czekalla;W. Jeitschko
先前报道的立方相化合物HgCr 2 O 4是通过Hg 2CrO 4在真空密封的石英管中在400 °C下热分解制备的。其结构通过粉末衍射仪数据的Rietveld分析确定。它是尖晶石型的（α = 865.8（1）μ m），并且它被精炼到Rp= 0.092的轮廓残差。用单斜C心晶格参数对同型黄色化合物Hg_2MoO_4和Hg_2WO_4的Guinier粉末衍射图进行了指标化（Hg2MoO4：a = 873.7（1）pm，B = 1155.1（1）pm，c = 493.17（4）pm，β = 115.24（1）°; Hg2WO4：a = 73.4（2）pm，B = 1148.3（2）pm，c = 493.16（7）pm，β = 114.87（1）°）。
The previously reported cubic compound HgCr2O4was prepared by thermal decomposition of Hg2CrO4at 400 °C in evacuated, sealed silica tubes. Its structure was determined by a Rietveld analysis of powder diffractometer data. It is of spinel type (a = 865.8(1) pm), and it was refined to a profile residual of Rp= 0.092. The Guinier powder patterns of the isotypic yellow compounds Hg2MoO4and Hg2WO4were indexed with the parameters of a monoclinic C-centered lattice (Hg2MoO4: a = 873.7(1) pm, b = 1155.1(1) pm, c = 493.17(4) pm, and β = 115.24(1)°; Hg2WO4: a = 73.4(2) pm, b = 1148.3(2) pm, c = 493.16(7) pm, and β = 114.87(1)°).