可分离的三配位碱稳定亚铝烯：无受体持久性单体氧化铝的前体。
Isolable Three-Coordinate Base-Stabilized Alumylene: A Precursor of Persistent Acceptor-Free Monomeric Aluminum Oxide.
作者信息
Baeza José Miguel León, Xu Huihui, Takahashi Shintaro, Baceiredo Antoine, Guerrero Rene Segundo Rojas, Hashizume Daisuke, Saffon-Merceron Nathalie, Branchadell Vicenç, Kato Tsuyoshi
机构信息
Laboratoire Hétérochimie Fondamentale et Appliquée (UMR 5069), Université de Toulouse, CNRS, 118 route de Narbonne, Toulouse, F-31062, France.
Departamento de Química Inorgánica, Facultad de Química y de Farmacia, Pontificia Universidad Católica de Chile, Casilla 306, Santiago 22, Chile.
出版信息
Angew Chem Int Ed Engl. 2025 Jun 2;64(23):e202505181. doi: 10.1002/anie.202505181. Epub 2025 Apr 10.
An isolable monomeric alumylene 2 stabilized by two donating ligands (phosphine and NHC) has been synthesized. Experimental and theoretical analysis confirm that the NHC ligand in 2 is labile and reversibly dissociates from the Al center above -20 °C. Of particular interest, despite being thermodynamically stabilized by two donor ligands, alumylene complex 2 exhibits a high reactivity with a considerably higher nucleophilicity compared to the monophosphine-ligated complex 5. It is interesting to note that 2 reacts immediately with NO at -90 °C, allowing the synthesis of bis-ligated aluminum oxide 15, which is stable up to -70 °C.
一种由两个给体配体（膦和NHC）稳定的可分离单体亚铝烯2已被合成。实验和理论分析证实，2中的NHC配体不稳定，在-20℃以上会从铝中心可逆解离。特别值得注意的是，尽管亚铝烯配合物2通过两个给体配体在热力学上得到稳定，但与单膦配位的配合物5相比，它表现出高得多的反应活性和相当高的亲核性。值得注意的是，2在-90℃下立即与NO反应，从而能够合成双配位氧化铝15，其在-70℃以下是稳定的。
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