Molecular aluminium trihydride, AlH3: generation in a solid noble gas matrix and characterisation by its infrared spectrum and Ab initio calculations

Abstract

Broad-band photolysis of a solid noble gas matrix containing Al atoms and H₂ gives rise to the planar, monomericAlH₃ molecule, isotopically natural and deuteriated forms of which have been characterised by their IR spectra; confirmation is afforded by the results of MP2 ab initio and normal coordinate analysis calculations.