首页> 美国卫生研究院文献>Acta Crystallographica Section E: Crystallographic Communications >Crystal structures of sodium- lithium- and ammonium 45-di­hydroxy­benzene-13-di­sulfonate (tiron) hydrates
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Crystal structures of sodium- lithium- and ammonium 45-di­hydroxy­benzene-13-di­sulfonate (tiron) hydrates

机译:45-二­羟基­苯-13-二­磺酸盐(钛)水合物的钠锂和铵的晶体结构

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摘要

The solid-state structures of the Na+, Li+, and NH4 + salts of the 4,5-di­hydroxy­benzene-1,3-di­sulfonate (tiron) dianion are reported, namely disodium 4,5-di­hydroxy­benzene-1,3-di­sulfonate, 2Na+·C6H4O8S2 2−, μ-4,5-di­hydroxy­benzene-1,3-di­sulfonato-bis­[aqua­lithium(I)] hemihydrate, [Li2(C6H4O8S2)(H2O)2]·0.5H2O, and di­ammonium 4,5-di­hydroxy­benzene-1,3-di­sulfonate monohydrate, 2NH4 +·C6H4O8S2 2−·H2O. Inter­molecular inter­actions vary with the size of the cation, and the asymmetric unit cell, and the macromolecular features are also affected. The sodium in Na2(tiron) is coordinated in a distorted octa­hedral environment through the sulfonate oxygen and hydroxyl oxygen donors on tiron, as well as an inter­stitial water mol­ecule. Lithium, with its smaller ionic radius, is coordinated in a distorted tetra­hedral environment by sulfonic and phenolic O atoms, as well as water in Li2(tiron). The surrounding tiron anions coordinating to sodium or lithium in Na2(tiron) and Li2(tiron), respectively, result in a three-dimensional network held together by the coordinate bonds to the alkali metal cations. The formation of such a three-dimensional network for tiron salts is relatively rare and has not been observed with monovalent cations. Finally, (NH4)2(tiron) exhibits extensive hydrogen-bonding arrays between NH4 + and the surrounding tiron anions and inter­stitial water mol­ecules. This series of structures may be valuable for understanding charge transfer in a putative solid-state fuel cell utilizing tiron.
机译:4,5-二羟基苯-1,3-的Na + ,Li + 和NH4 + 盐的固态结构报道了二磺酸根(二价铁)二价阴离子,即4,5-二羟基苯-1,3-二磺酸二钠,2Na + ·C6H4O8S2 2-,μ-4,5-二羟基苯-1,3-二磺酸双-[Aqualithium(I)]半水合物,[Li2(C6H4O8S2)(H2O)2]·0.5H2O和4,5-二羟基苯-1,3-二磺酸二水合物一铵,2NH4 + ·C6H4O 8 S 2 2 − ·H 2 O。分子间相互作用随阳离子的大小而变化,并且不对称晶胞也受到影响。 Na 2 (tiron)中的钠在扭曲的八面体环境中通过铁上的磺酸盐氧和羟基氧供体以及填隙水分子进行配位。锂离子离子半径较小,它在扭曲的四面体环境中被磺酸和酚O原子以及Li <2>(subron)中的水配位。周围的亚铁阴离子分别与Na 2 (tiron)和Li 2 (tiron)中的钠或锂配位,形成一个三维网络键与碱金属阳离子结合。这种三价铁盐的三维网络的形成相对罕见,并且一价阳离子还没有观察到。最后,(NH 4 2 (tiron)在NH 4 + 与NH 4 + 之间显示出广泛的氢键阵列。周围的铁离子和间隙水分子。这一系列的结构对于理解利用铁的推定固态燃料电池中的电荷转移可能是有价值的。

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