Synthesis and crystal structure of europium(II) tartrate tetrahydrate, [Eu(C4H4O6) (H2O)2](H2O)2

被引：0
|
作者：
Starynowicz, P
Meyer, G
机构：
[1] Univ Cologne, Inst Anorgan Chem, D-50939 Cologne, Germany
[2] Univ Wroclaw, Inst Chem, PL-50138 Wroclaw, Poland
来源：
ZEITSCHRIFT FUR ANORGANISCHE UND ALLGEMEINE CHEMIE | 2000年 / 626卷 / 12期
关键词：
divalent europium; tartrate; crystal structure;
D O I：
10.1002/1521-3749(200012)626:12<2441::AID-ZAAC2441>3.0.CO;2-L
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
Single crystals of [Eu(C4H4O6)(H2O)(2)] (H2O)(2) were obtained from the combination of solutions of EuCl2, previously obtained by electrolysis of an aqueous solution of EuCl3, and tartraric acid, neutralized by LiOH. The crystal structure (orthorhombic, P2(1)2(1)2(1), Z = 4, a = 948.9(1), b = 954.6(1), c = 1098.4(1) pm; R(F) = 0.0242 and R-w(F-2) = 0.0585 for I > 2 sigma (I); R(F) = 0.0256 and R-w(F-2) = 0.0592 for all data) is isotypic with [Ca(C4H4O6)(H2O)(2)](H2O)(2) and [Sr(C4H4O6)(H2O)(2)](H2O)(2) exhibiting a three-dimensional structure. The divalent cations (Eu2+, Ca2+, Sr2+) are eight-coordinate by oxygen atoms that originate from carboxylate and hydroxyl groups of the tartraric dianion and two of the four water molecules.
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页码：2441 / 2442
页数：2
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