Synthesis of Unsupported Primary Phosphido Complexes of Aluminum(III),Zeitschrift für anorganische und allgemeine Chemie

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Synthesis of Unsupported Primary Phosphido Complexes of Aluminum(III)
Zeitschrift für anorganische und allgemeine Chemie ( IF 1.1 ) Pub Date : 2021-08-13 , DOI: 10.1002/zaac.202100199
Nathan A. Phan ₁ , Tobias J. Sherbow ₁ , James C. Fettinger ₁ , Louise A. Berben ₁

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Primary phosphido complexes of aluminum(III) are rare, particularly those that are not supported by interactions with Lewis bases or stabilizing cations. Here we report two new examples of unsupported primary phosphido complexes of Al(III). The ancillary ligand on Al is a pincer ligand, diiminopyridine (denoted as I₂P). Solid-state structures show distorted tetrahedral geometry about Al and single bond character in the Al−P bond. Near infra-red spectra display low energy absorption bands near 1050 nm that are consistent with pincer ligand – Al charge transfer transitions and metalloaromatic character in the “(I₂P²⁻)Al” fragment of the molecules. The phosphido ligands lie out of the I₂P ligand plane by up to 15° and this is consistent with our previous reports where π-donor halide ligands occupy the fourth coordination site on Al.

中文翻译：

铝(III)无载体初级磷配合物的合成

铝 (III) 的初级磷化配合物很少见，特别是那些不受与路易斯碱或稳定阳离子相互作用支持的配合物。在这里，我们报告了两个无支撑的 Al(III) 初级磷化物配合物的新例子。Al上的辅助配体是钳状配体，二亚氨基吡啶（表示为I ₂ P）。固态结构显示出关于 Al 的扭曲四面体几何形状和 Al-P 键中的单键特征。近红外光谱显示 1050 nm 附近的低能量吸收带，这与分子的“(I ₂ P ^2- )Al”片段中的钳形配体 - Al 电荷转移跃迁和金属芳族特征一致。磷基配体位于 I _{2 之外}P 配体平面最多 15°，这与我们之前的报告一致，其中 π 供体卤化物配体占据 Al 上的第四个配位点。

更新日期：2021-09-21

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