反式菱形酸氧铵及其相关钠盐:一种罕见的结晶络合酸的例子

Acta Crystallographica Section B Structural Science, Crystal Engineering and Materials Pub Date : 2021-11-24 DOI:10.1107/s205252062101115x

I. Garkul, A. Zadesenets, E. Filatov, I. Baidina, S. Tkachev, D. Samsonenko, S. Korenev

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引用次数: 1

摘要

合成了新的配位化合物反式双(草酸)二水合钠Na[Rh(H2O)2Ox2]·2H2O(结晶为NaRh-1和NaRh-2两种多晶型)、反式双(草酸)氢氧四水合钠Na2[Rh(H2O)(OH)Ox2]·4H2O (Na2Rh)和反式双(草酸)二四水合酸(h30)[Rh(H2O)2Ox2]·4H2O (HRh)。通过红外光谱、元素分析和x射线单晶衍射对化合物进行了表征。NaRh-1、NaRh-2和Na2Rh在空间群p1中结晶。反式双(草酸)二四酸不仅存在于溶液中，而且可以结晶为四水合物(空间群C2/c)。采用103Rh核磁共振波谱法研究了氢氧化铑在草酸溶液中的形成及其重分布。

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Oxonium trans-bis(oxalato)rhodate and related sodium salts: a rare example of crystalline complex acid

New coordination compounds trans-bis(oxalato)diaquarhodiate sodium dihydrate Na[Rh(H2O)2Ox2]·2H2O (crystallizes in two polymorphic forms NaRh-1 and NaRh-2), trans-bis(oxalato)hydroxoaquarhodiate sodium tetrahydrate Na2[Rh(H2O)(OH)Ox2]·4H2O (Na2Rh) and trans-bis(oxalato)diaquarhodic acid tetrahydrate (H3O)[Rh(H2O)2Ox2]·4H2O (HRh) are synthesized. The compounds are characterized by IR spectroscopy, elemental analysis and single crystal X-ray diffraction. NaRh-1, NaRh-2 and Na2Rh crystallize in space group P 1. Trans-bis(oxalato)diaquarhodic acid exists not only in solution, but can also crystallize as a tetrahydrate (space group C2/c). The formation of various species in solution of rhodium hydroxide in oxalic acid and their redistribution were studied using 103Rh NMR spectroscopy.

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Acta Crystallographica Section B Structural Science, Crystal Engineering and Materials

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