The research focuses on the synthesis and characterization of soluble molecular dimers of calcium oxide (CaO) and strontium oxide (SrO) stabilized by a Lewis acid, specifically the compounds [{L1Al(Me)(m-O)Ca(thf)}2] (7) and [{L1Al(Me)(m-O)Sr(thf)}2] (8). The reactants used in the experiments include [LAlMe(OH)] (1), [Ca{N(SiMe3)2}2(thf)2] (5), and [Sr{N(SiMe3)2}2(thf)2] (6), with [L1Al(Me)] acting as a Lewis acid and coordinating to the oxygen atoms in the final products. The synthesis involves deprotonation of a methyl group in the ligand backbone, leading to the formation of CaO and SrO cores. The compounds were characterized using NMR spectroscopy, EI mass spectrometry, elemental analysis, and X-ray structural analysis. Theoretical calculations using density functional theory were also performed to understand the electronic structure and bonding properties of the synthesized complexes.
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