SYNTHESIS, STRUCTURE, AND THERMOLYSIS OF THE TERNARY AMMONIUM NITRATES (NH4)3[M2(NO3)9] (M = LA-GD)

被引：16

作者：

MANEK, E

MEYER, G

机构：

[1] UNIV HANNOVER,INST ANORGAN CHEM,CALLINSTR 9,W-3000 HANNOVER,GERMANY

[2] SONDERFORSCH BEREICH 173,HANNOVER,GERMANY

来源：

ZEITSCHRIFT FUR ANORGANISCHE UND ALLGEMEINE CHEMIE | 1992年 / 616卷 / 10期

关键词：

CRYSTAL STRUCTURE; SYNTHESIS; THERMOLYSIS; LANTHANIDES; TERNARY AMMONIUM NITRATES;

D O I：

10.1002/zaac.19926161021

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

The ternary ammonium nitrates (NH4)3[M2(NO3)9] (M = La-Gd) are obtained as single crystals from a solution of the respective sesquioxides in a melt of NH4NO3 and sublimation of the excess NH4NO3. In the crystal structure of (NH4)3[Pr2(NO3)9] (cubic, P4(3)32, Z = 4, a = 1377.0(1) pm, R = 0.038, R(w) = 0.023) Pr3+ is surrounded by six bidentate nitrate ligands of which three are bridging to neighbouring Pr3+ ions. This results in a branched folded chain, held together by the NH4+ ions which occupy cavities in the structure. (NH4)3[Pr2(NO3)9] is the first intermediate product of the thermal decomposition of (NH4)2[Pr(NO3)5(H2O)2] . 2H2O.

引用

页码：141 / 144

页数：4

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[2]

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