Mechanochemical Synthesis of Non‐Solvated Dialkylalumanyl Anion and XPS Characterization of Al(I) and Al(II) Species**

Abstract

A non‐solvated alkyl‐substituted Al(I) anion dimer was synthesized by a reduction of haloalumane precursor using a mechanochemical method. The crystallographic and theoretical analysis revealed its structure and electronic properties. Experimental XPS analysis of the Al(I) anions with reference compounds revealed the lower Al 2p binding energy corresponds to the lower oxidation state of Al species. It should be emphasized that the experimentally obtained XPS binding energies were reproduced by delta SCF calculations and were linearly correlated with NPA charges and 2p orbital energies.

Vanadium Alumanyl Complex: Synthesis, Characterization, Reactivity, and Application as a Catalyst for C–H Alumanylation of Alkenes

“…Although the above data clarifies the connectivity of 2 and 4 , the electronic structure is somewhat ambiguous because both Al and V atoms have similar electronegativity (Al: 1.61, V: 1.63, Pauling) and flexibility in their oxidation states . Polarization of the V–Al bond in 2 would have three possibilities as described in Figure a.…”

Mechanochemical synthesis of iron aluminyl complexes

“…15 Earlier this year Yamashita and co-workers also reported that non-solvated dialkylaluminyl anion can be isolated from the mechanochemical reduction of the dialkylaluminium iodide with an Na/K alloy ( IV ). 16…”