Hexanuclear Niobium Cluster Complex Anions with Acetato Ligands on Intramolecular Bridging Sites: [Nb_6Cl_4~i(OAc)_8~iCl_6~a]~(2-) and [Nb_6(OAc)_(12)~iCl_6~a]~(2-)

Jonas K?nig; Martin K?ckerling

首页> 外文期刊>Zeitschrift fur Anorganische und Allgemeine Chemie >Hexanuclear Niobium Cluster Complex Anions with Acetato Ligands on Intramolecular Bridging Sites: [Nb_6Cl_4~i(OAc)_8~iCl_6~a]~(2-) and [Nb_6(OAc)_(12)~iCl_6~a]~(2-)

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Hexanuclear Niobium Cluster Complex Anions with Acetato Ligands on Intramolecular Bridging Sites: [Nb_6Cl_4~i(OAc)_8~iCl_6~a]~(2-) and [Nb_6(OAc)_(12)~iCl_6~a]~(2-)

机译：六核铌簇复合阴离子与分子内桥接点上的乙酰盐配体：[nb_6cl_4〜i（Oac）_8〜Icl_6〜a]〜（2-）和[nb_6（Oac）_（12）〜Icl_6〜a]〜（2- 的）

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From the reaction of [Nb_6Cl_(14)(H_2O)_4]·4H_2O with acetic anhydride in the presence of an excess of (nBu_4N)F the novel cluster compounds (nBu_4N)_2[Nb_6Cl_4~i(OAc)_8~iCl_6~a] (1) and (nBu_4N)_2[Nb_6(OAc)_(12)~iCl_6~a] (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 μ_2-η~1-fashion with one O atom an edge of the metal atom octahedron. The monoclinic crystals of 1 consist of discrete (nBu_4N)~+ cations and [Nb_6Cl_4~i(OAc)_8~iCl_6~a]~(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.

机译：通过[Nb_6Cl_（14）（H_2O）_4]·4H_2O与醋酐在过量（nBu_4N）存在下的反应，得到了新的簇合物（nBu_4N）_2[Nb_6Cl_4~i（OAc）_8~iCl_6~a]（1）和（nBu__4N）_2[Nb_6（OAc）~iCl_6~a]（2）（OAc=aceto配体）。他们是第一个在金属原子八面体的内部位置上带有乙酰基配体的六核铌簇合物的例子。讨论了氟离子在合成中的关键作用。每个乙酰基以μ2-η~1-方式与金属原子八面体边缘的一个O原子连接。1的单斜晶体由离散的（nBu_4N）~+阳离子和[Nb_6Cl_4~i（OAc）_8~iCl_6~a]~（2-）团簇阴离子组成。相对于团簇起始材料，它们被两个电子氧化。除1和2的合成外，还报道了1的结构和两种化合物的光谱性质。

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《Zeitschrift fur Anorganische und Allgemeine Chemie》 |2020年第14期|共6页
作者
Jonas K?nig; Martin K?ckerling;
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作者单位

Anorganische Festk?rperchemie Institut für Chemie Universit?t Rostock Albert-Einstein-Str. 3a 18059 Rostock Germany;

Anorganische Festk?rperchemie Institut für Chemie Universit?t Rostock Albert-Einstein-Str. 3a 18059 Rostock Germany;

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正文语种 eng
中图分类化学;
关键词
Acetato ligand; Niobium; Cluster; Synthesis; X-ray diffraction;

机译：醋酸甲酰胺;铌;簇;合成;X射线衍射;

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Hexanuclear Niobium Cluster Complex Anions with Acetato Ligands on Intramolecular Bridging Sites: [Nb_6Cl_4~i(OAc)_8~iCl_6~a]~(2-) and [Nb_6(OAc)_(12)~iCl_6~a]~(2-)

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