MOLECULAR ALUMINUM TRIHYDRIDE, ALH3 - GENERATION IN A SOLID NOBLE-GASMATRIX AND CHARACTERIZATION BY ITS INFRARED-SPECTRUM AND AB-INITIO CALCULATIONS

Broad-band photolysis of a solid noble gas matrix containing Al atoms and H-2 gives rise to the planar, monomeric AlH3 molecule, isotopicall y natural and deuteriated forms of which have been characterised by th eir IR spectra; confirmation is afforded by the results of MP2 ab init io and normal coordinate analysis calculations.