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测定了La(ClO_4)_3-Gly-H_2O在25℃时体系的溶度,并绘制了相应的溶度图.体系中形成了2个新配合物La(Gly)_3(ClO_4)_(3)·2H_2O(Ⅰ)和La(Gly)_4(ClO_4)_3(Ⅱ).(Ⅰ)为固液异成分溶解、(Ⅱ)为固液同成分溶解的化合物,同时以相图为依据合成并培养了配合物(Ⅰ)的单晶,测定了晶体结构,其化学式为(La_2(Gly)_6(H_2O)_4]·6ClO_4,晶体属三斜晶系,P1空间群,每个晶胞中有2个化学式量.晶胞参数:a=1.0693(3)nm,b=1.2956(3)nm,c=0.8762(3)nm,α=82.83(3)°,β=67.25(3)°,γ=71.50(2)°,配位单元中镧为9配位,其配位多面体为畸变的三冠三角棱柱体.
The solubility of La (ClO_4) _3-Gly-H_2O at 25 ℃ was determined and the corresponding solubility diagrams were plotted. Two new complexes, La (Gly) _3 (ClO_4) _ (3) · 2H2O (I) and La (Gly) _4 (ClO_4) _3 (II). (I) The solid-liquid iso-components dissolve, (II) compounds dissolved in solid and liquid with the same ingredients, The crystal structure of the complex (Ⅰ) was determined. Its chemical formula is (La_2 (Gly) _6 (H_2O) _4] .6ClO_4. The crystal belongs to the triclinic system with P1 space group, and there are 2 (3) nm, α = 82.83 (3) °, β = 67.25 (3) °, γ = 71.50 (2) °, lanthanum is coordinated with 9 in the coordination unit, and its coordination polyhedron is a distorted triple-crown triangular prism.