Abstract

The hydrogen molecule is treated as a model substance for matrix-isolation effects. Raman investigations are made concerning the influence of matrix material on the various modes of hydrogen. The opposite interaction, how the defect influences modes of the matrix, is the object of the following paper.For the doublet in the vibrational range of hydrogen in rare-gas solids, an assignment to Q1(0) and Q2(1) is made and well substantiated. In addition to matrix-shift considerations, temperature influences, ortho–para investigations, and aggregation effects, different sites are observable in the nonspherical matrices, N2 and O2, with a restriction of free rotation in nitrogen.

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