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首页> 外文期刊>Crystallography reports >Synthesis and structure of two crystalline modifications of bis(1,10-phenanthroline)trinitratoeuropium(III) Eu(NO3)(3)(Phen)(2)
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Synthesis and structure of two crystalline modifications of bis(1,10-phenanthroline)trinitratoeuropium(III) Eu(NO3)(3)(Phen)(2)

机译：双（1,10-菲咯啉）trinitratoeuropium（III）Eu（NO3）（3）（Phen）（2）的两种晶体修饰的合成和结构

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Two crystalline modifications (I and II) of the phenanthroline complex of europium nitrate with the same chemical composition, Eu(NO3)(3)(Phen)(2), are synthesized under different conditions by varying the solvents. temperatures. and crystallization rates. The crystal structures of these modifications are determined using X-ray diffraction. Crystalline modifications I and II differ in the unit cell parameters and the positions of the complexes in the unit cell. The geometric characteristics of the complexes in the structures of compounds I and II differ insignificantly. Crystals of compound I belong to the isostructural family Ln(NO3)(3)(Phen)(2) (Ln = La-Lu). Crystal. of compound II (new phase) are studied for the first time. Crystals of I and II are monoclinic, space group C2/c,. and Z = 4. The unit cell parameters are as follows: a = 11.1555(10) angstrom, b = 17.9698(10) angstrom 13.0569(10) angstrom, beta = 100.507(10)degrees, and V = 25721(3) angstrom(3) for modification I and a = 9.5153(10) angstrom, b = 15.4546(10) angstrom, c = 17.1763(10) angstrom, beta = 93.451(10)degrees, and V = 2521.3(3) angstrom(3) for modification II. The difference between the molecular complexes in the structures of compounds I and II is revealed by the superposition method. Complexes II are arranged along the C-2 axis and are statistically disordered with respect to this axis.
机译：通过改变溶剂，在不同条件下合成具有相同化学组成的硝酸nitrate的菲咯啉配合物的两个晶体修饰物（I和II），即Eu（NO3）（3）（Phen）（2）。温度。和结晶速率。使用X射线衍射确定这些修饰的晶体结构。晶型I和II的晶胞参数和晶胞中复合物的位置不同。化合物Ⅰ和Ⅱ结构中配合物的几何特征无明显差异。化合物I的晶体属于同构族Ln（NO3）（3）（Phen）（2）（Ln = La-Lu）。水晶。化合物II（新相）的化合物首次被研究。 I和II的晶体是单斜晶体，空间群C2 / c。 Z =4。单位晶胞参数如下：a = 11.1555（10）埃，b = 17.9698（10）埃13.0569（10）埃，beta = 100.507（10）度，V = 25721（3）埃（3）对于修改I和a = 9.5153（10）埃，b = 15.4546（10）埃，c = 17.1763（10）埃，beta = 93.451（10）度和V = 2521.3（3）埃（3）用于修改II。化合物I和II的结构中的分子配合物之间的差异通过叠加法揭示。配合物II沿C-2轴排列，并且相对于该轴在统计上是无序的。

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