Hexanuclear Niobium Cluster Complex Anions with Acetato Ligands on Intramolecular Bridging Sites: [Nb6Cli4(OAc)i8Cla6]2– and [Nb6(OAc)i12Cla6]2–,Zeitschrift für anorganische und allgemeine Chemie

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Hexanuclear Niobium Cluster Complex Anions with Acetato Ligands on Intramolecular Bridging Sites: [Nb6Cli4(OAc)i8Cla6]2– and [Nb6(OAc)i12Cla6]2–
Zeitschrift für anorganische und allgemeine Chemie ( IF 1.1 ) Pub Date : 2020-06-10 , DOI: 10.1002/zaac.202000173
Jonas König ₁ , Martin Köckerling _{1,

2}

Affiliation

From the reaction of [Nb₆Cl₁₄(H₂O)₄]·4H₂O with acetic anhydride in the presence of an excess of (nBu₄N)F the novel cluster compounds (nBu₄N)₂[Nb₆Clⁱ₄(OAc)ⁱ₈Cl^a₆] (1) and (nBu₄N)₂[Nb₆(OAc)ⁱ₁₂Cl^a₆] (2) (OAc = acetato ligand) are obtained. They are the first examples of hexanuclear niobium cluster compounds with acetato ligands on the inner sites of the metal atom octahedron. The crucial role of the presence of fluoride ions in the synthesis is discussed. Each acetato ligand bridges in a μ₂‐η¹‐fashion with one O atom an edge of the metal atom octahedron. The monoclinic crystals of 1 consist of discrete (nBu₄N)⁺ cations and [Nb₆Clⁱ₄(OAc)ⁱ₈Cl^a₆]^2– cluster anions. They are oxidized by two electrons with respect to the cluster starting material. Besides the syntheses of 1 and 2, the structure of 1 and spectral properties of both compounds are reported.

中文翻译：

在分子内桥联位点上带有乙酰基配体的六核铌簇络合物阴离子：[Nb6Cli4（OAc）i8Cla6] 2–和[Nb6（OAc）i12Cla6] 2–

在过量（n Bu ₄ N）F存在下，由[Nb ₆ Cl ₁₄（H ₂ O）₄ ] · 4H ₂ O与乙酸酐反应，得到新型簇化合物（n Bu ₄ N）₂ [Nb ₆ Cl ⁱ₄（OAc）ⁱ₈ Cl ^a₆ ]（1）和（n Bu ₄ N）₂ [Nb ₆（OAc）ⁱ₁₂ Cl ^a₆ ]（2）（OAc =乙酰基配体）。它们是在金属原子八面体的内部位点具有乙酰基配体的六核铌簇化合物的第一个实例。讨论了氟离子在合成中的关键作用。每个配位体乙酸根桥在μ ₂ -η ¹ -时尚与一个O原子的金属原子八面体的一个边缘。的斜晶体1由离散的（Ñ卜₄ N）⁺阳离子和[Nb的₆氯^我₄（OAC）^我₈氯^一个₆ ] ^2-簇状阴离子。相对于簇起始材料，它们被两个电子氧化。除了1和2的合成外，还报道了这两种化合物的1的结构和光谱性质。

更新日期：2020-06-10

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