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首页> 外文期刊>Zeitschrift fur Anorganische und Allgemeine Chemie >Syntheses, crystal structures, and thermal behaviors of two new metallo-organically templated pentaborates
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Syntheses, crystal structures, and thermal behaviors of two new metallo-organically templated pentaborates

机译：两种新型金属有机模板的五价硼酸酯的合成，晶体结构和热行为

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摘要

Two new cadmium borates, [Cd(en)3][B5O 6(OH)4]2·2H2O (en = ethylenediamine) (1) and [Cd(DETA)2][B5O 6(OH)4]2 (DETA = diethylenetriamine) (2) were synthesized in a novel procedure under mild solvothermal conditions and characterized by single-crystal X-ray diffraction, IR spectroscopy, elemental analysis, and TG-DTA. The compound 1 crystallizes in monoclinic system, space group P21/c (No. 14) with a = 8.526(2) ?, b = 23.127(6) ?, c = 15.438(4) ?, β = 94.320(3) °, V = 3035.5(13) ?3, Z = 4. Compound 2 is triclinic, space group P1? (No. 2), a = 8.632(5) ?, b = 9.418(6) ?, c = 27.856(18) ?, α = 95.415(8) °, β = 91.891(7) °, γ = 93.563 (7) °, V = 2248(2) ?3, Z = 3. The anionic units of the both structures, [B5O6(OH)4]- are linked by hydrogen bonds to form a three-dimensional framework with large channels, in which the templating cadmium complex cations are located. The thermal decomposition performance of compound 1 requires three steps, whereas only two steps are needed for compound 2, which all lead to amorphous phases. These processes are well explained considering the structure and the change in the Cd2+ coordination during heating.
机译：两个新的硼酸镉，[Cd（en）3] [B5O 6（OH）4] 2·2H2O（en =乙二胺）（1）和[Cd（DETA）2] [B5O 6（OH）4] 2（DETA）分子式（2）在温和的溶剂热条件下以新颖的方法合成，并通过单晶X射线衍射，IR光谱，元素分析和TG-DTA表征。化合物1在单斜晶系空间群P21 / c（No. 14）中结晶，a = 8.526（2）β，b = 23.127（6）α，c = 15.438（4）β，β= 94.320（3）° ，V ＝ 3035.5（13）≤3，Z ＝ 4。化合物2为三斜链，空间群为P1？ （第2号），a = 8.632（5）α，b = 9.418（6）α，c = 27.856（18）α，α= 95.415（8）°，β= 91.891（7）°，γ= 93.563（ 7）°，V = 2248（2）α3，Z =3。[B5O6（OH）4]-这两个结构的阴离子单元通过氢键连接，形成带有大通道的三维骨架。模板镉络合物阳离子所处的位置。化合物1的热分解性能需要三个步骤，而化合物2仅需要两个步骤，所有这些步骤都会导致非晶相。考虑到加热过程中Cd2 +配位的结构和变化，对这些过程进行了很好的解释。

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