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[M2(μ‐OH)2(DHBQ)3] (M = Zr, Hf) ‐ Two New Isostructural Coordination Polymers based on the Unique M2O14 Inorganic Building Unit and 2,5‐Dioxido‐p‐benzoquinone as Linker Molecule
Zeitschrift für anorganische und allgemeine Chemie ( IF 1.1 ) Pub Date : 2020-10-05 , DOI: 10.1002/zaac.202000315
Norbert Stock 1 , Mirjam Patricia Margarete Poschmann , Helge Reinsch
Affiliation  

Two new isostructural porous coordination polymers (CPs) were obtained under solvothermal reaction conditions using 2,5‐dihydroxy‐p‐benzoquinone (H2DHBQ) or 1,2,4,5‐tetrahydroxybenzene (H4THB) as linker molecule and Zr4+ or Hf4+ salts. Highly crystalline compounds with composition [M2(μ‐OH)2(DHBQ)3]·xH2O (M = Zr4+ or Hf4+, x = 0–3.6/3.3) were found in a wide temperature range (120–200 °C) and a reaction time of 70 h. The crystal structures were determined ab initio from powder X‐ray diffraction data and the oxidation state of the linker was confirmed spectroscopically. The dinuclear inorganic building unit M2O14 is new for Zr‐ and Hf‐CPs. For both compounds a full characterization was carried out, i.e. crystal structure determination, spectroscopic measurements, elemental‐ and thermogravimetric analyses. [M2(OH)2(DHBQ)3] (M = Zr4+ or Hf4+) is stable up to 250 and 220 °C, respectively. Water sorption measurements proofed an uptake of 3.6 mol H2O per mol and 3.3 mol H2O per mol, respectively.

中文翻译:

[M2(μ-OH)2(DHBQ)3](M = Zr,Hf)‐两种基于独特的M2O14无机结构单元和2,5-二氧-对-苯醌作为连接分子的新型同构配位聚合物

在溶剂热反应条件下,使用2,5-二羟基对苯醌(H 2 DHBQ)或1,2,4,5-四羟基苯(H 4 THB)作为连接分子和Zr ,获得了两种新的同构多孔配位聚合物(CPs)。4+或Hf 4+盐。用组合物[M高度结晶的化合物2(μ-OH)2(DHBQ)3 ] · X ^ h 2 O(M = Zr的4+或Hf 4+X= 0–3.6 / 3.3)在较宽的温度范围(120–200°C)和70小时的反应时间中被发现。从粉末X射线衍射数据从头确定晶体结构,并通过光谱确认接头的氧化态。双核无机建筑单元M 2 O 14是Zr-和Hf-CP的新成员。对这两种化合物都进行了全面表征,即晶体结构测定,光谱测量,元素和热重分析。[M 2(OH)2(DHBQ)3 ](M = Zr 4+或Hf 4+)分别在高达250和220°C的温度下稳定。吸水率测量证明吸收了3.6 mol H 2每摩尔O 2和每摩尔3.3 mol H 2O。
更新日期:2020-10-05
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