Insights into the structural chemistry, topology, and complexity of organically templated polychromates(VI) with the linear [CrnO3n+1]2– groups: Synthesis and crystal structures of 1-methylpiperazinium polychromates, (C5H14N2)Cr2O7 and (C5H14N2)Cr3O10

IF 3.4 3区化学 Q2 CHEMISTRY, INORGANIC & NUCLEAR

Solid State Sciences Pub Date : 2025-02-06 DOI:10.1016/j.solidstatesciences.2025.107854

Sergey M. Aksenov , Dmitri O. Charkin , Alexander M. Banaru , Dmitri N. Dmitriev , Vadim E. Kireev , Grigory S. Ilyin , Yulia A. Vaitieva

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Abstract

Single crystals of two new compounds, (C₅H₁₄N₂)Cr₂O₇ (1) and (C₅H₁₄N₂)Cr₃O₁₀ (2), were isolated from the reaction products of 1-methylpiperazine and chromium trioxide in aqueous media. The crystal structures have been studied by the means of single-crystal X-ray analysis. The unit cell parameters are: a = 7.8459(1) Å, b = 8.8295(1) Å, c = 15.8951(2) Å, β = 96.634(1)°, space group P2₁/n for 1 and a = 8.0620(2) Å, b = 11.6652(4) Å, c = 14.5690(5) Å, β = 100.285(3)°, space group P2₁/c for 2. In contrast to chromate compounds templated by structurally related ethylenediammonium and piperazinediium cations, no monochromate was found in the 1-methylpiperazine – water – chromic oxide system. Both structures can be represented as nets of hydrogen bonds between the organic ammonium cations and polychromate anions. We discuss the structural features of various polychromate species (Cr₂O₇²⁻, Cr₃O₁₀²⁻, and Cr₄O₁₃²⁻) among structures comprising organic and inorganic cations.

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具有线性[CrnO3n+1]2 -基团的有机模板化多铬酸盐（VI）的结构化学、拓扑结构和复杂性：1-甲基哌酸多铬酸盐（C5H14N2）Cr2O7和（C5H14N2）Cr3O10的合成和晶体结构

从1-甲基哌嗪与三氧化铬的反应产物中分离得到了两个新化合物（C5H14N2）Cr2O7(1)和（C5H14N2）Cr3O10(2)的单晶。用单晶x射线分析方法对晶体结构进行了研究。晶胞参数:= 7.8459 (1)a, b = 8.8295 (1) a, c = 15.8951(2),β= 96.634(1)°,空间群P21 / n为1 = 8.0620 (2)a, b = 11.6652 (4) a, c = 14.5690(5),β= 100.285(3)°,空间群P21 / c 2。与结构相关的乙二铵和哌嗪阳离子模板化的铬酸盐化合物相比，在1-甲基哌嗪-水-氧化铬体系中没有发现单铬酸盐。这两种结构都可以表示为有机铵阳离子和多铬酸盐阴离子之间的氢键网。我们讨论了各种多铬酸盐（Cr2O72−，Cr3O102−和Cr4O132−）在有机和无机阳离子结构中的结构特征。

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来源期刊

Solid State Sciences 化学-无机化学与核化学

CiteScore

6.60

自引率

2.90%

发文量

214

审稿时长

27 days

期刊介绍： Solid State Sciences is the journal for researchers from the broad solid state chemistry and physics community. It publishes key articles on all aspects of solid state synthesis, structure-property relationships, theory and functionalities, in relation with experiments. Key topics for stand-alone papers and special issues: -Novel ways of synthesis, inorganic functional materials, including porous and glassy materials, hybrid organic-inorganic compounds and nanomaterials -Physical properties, emphasizing but not limited to the electrical, magnetical and optical features -Materials related to information technology and energy and environmental sciences. The journal publishes feature articles from experts in the field upon invitation. Solid State Sciences - your gateway to energy-related materials.