Bis(ethylenediammonium) μ-ethylenediaminetetraacetato-1κ3O,N,O′:2κ3O′′,N′,O′′′-bis[trioxidomolybdate(VI)] tetrahydrate

IUCrData Pub Date : 2024-07-01 DOI:10.1107/S2414314624006679

Lamine Yaffa , Dame Seye , Antoine Blaise Kama , Assane Toure , Cheikh Abdoul Khadir Diop

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Abstract

The title compound is a binuclear complex of molybdenum with a ethylenediaminetretraacetate ligand bridging two MoO₃ units.

The title compound, (C₂H₁₀N₂)₂[(C₁₀H₁₂N₂O₈)(MoO₃)₂]·4H₂O, which crystallizes in the monoclinic C2/c space group, was obtained by mixing molybdenum oxide, ethylenediamine and ethylenediaminetetraacetic acid (H₄edta) in a 2:4:1 ratio. The complex anion contains two MoO₃ units bridged by an edta⁴⁻ anion. The midpoint of the central C—C bond of the edta⁴⁻ anion is located on a crystallographic inversion centre. The independent Mo atom is tridentately coordinated by a nitrogen atom and two carboxylate groups of the edta⁴⁻ ligand, together with the three oxo ligands, producing a distorted octahedral coordination environment. In the three-dimensional supramolecular crystal structure, the dinuclear anions, the organoammonium counter-ions and the solvent water molecules are linked by N—H⋯O_w, N—H⋯O_edta and O—H⋯O hydrogen bonds.

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双(乙二铵)μ-乙二胺四乙酰氧基-1κ3 O,N,O′:2κ3 O′′,N′,O′′-双[三氧化钼(VI)]四水合物

标题化合物 (C2H10N2)2[(C10H12N2O8)(MoO3)2]-4H2O 是通过将氧化钼、乙二胺和乙二胺四乙酸 (H4edta) 按 2:4:1 的比例混合而得到的，该化合物在单斜 C2/c 空间群中结晶。复合阴离子包含两个由 edta4- 阴离子桥接的 MoO3 单元。edta4- 阴离子中央 C-C 键的中点位于一个晶体学反转中心。独立的钼原子与 edta4- 配体的一个氮原子和两个羧基以及三个氧配体三方配位，形成一个畸变的八面体配位环境。在三维超分子晶体结构中，双核阴离子、有机铵反离子和溶剂水分子通过 N-H...Ow、N-H...Oedta 和 O-H.O 氢键相连。

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