一种新的四价铈铬酸盐：Ce2(CrO4)4·2H2O。
A new chromate of tetravalent cerium: Ce2(CrO4)4.2H2O.
作者信息
Kolitsch Uwe, Schwendtner Karolina
机构信息
Universität Wien, Institut für Mineralogie und Kristallographie, Geozentrum, Althanstrasse 14, A-1090 Wien, Austria.
出版信息
Acta Crystallogr C. 2004 Sep;60(Pt 9):i89-90. doi: 10.1107/S0108270104017275. Epub 2004 Aug 11.
Dicerium(IV) tetrachromate(VI) dihydrate, Ce2(IV)(CrO4)4.2H2O, has been prepared from an acidic aqueous solution at room temperature. Its novel crystal structure, which was solved from single-crystal X-ray diffraction data, is built from isolated CrO4 tetrahedra and isolated Ce(O,H2O)n (n = 8 and 9) polyhedra. All atoms are in general positions. The mean Ce-O and Cr-O bond lengths are 2.358 and 1.651 A, respectively. Comparisons are drawn with the structure of Ce(IV)(CrO4)2.2H2O.
四水合四铬酸铈(IV)，Ce2(IV)(CrO4)4·2H2O，已在室温下由酸性水溶液制备而成。其新颖的晶体结构由单晶X射线衍射数据解析得出，该结构由孤立的CrO4四面体和孤立的Ce(O,H2O)n（n = 8和9）多面体构成。所有原子均处于一般位置。Ce - O和Cr - O的平均键长分别为2.358 Å和1.651 Å。文中还将其结构与Ce(IV)(CrO4)2·2H2O的结构进行了比较。
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