Mechanochemical Synthesis of Non-Solvated Dialkylalumanyl Anion and Solid-State-Characterization Using Crystallo-graphic Analysis and X-ray Photoelectron Spectroscopy

A non-solvated alkyl-substituted Al(I) anion dimer was synthesized by a reduction of haloalumane precursor using a mechanochemical method. The crystallographic and theo-retical analysis revealed its structure and electronic proper-ties. Experimental and theoretical XPS analysis of the di-mer with reference compounds revealed the low oxidation state of Al(I) anions. It should be emphasized that the ex-perimentally obtained XPS binding energies were repro-duced by delta SCF calculations and were linearly correlat-ed with NPA charges and 2p orbital energies.