Some New Molecular Hydrides Stabilized and Characterized with the Aid of the Matrix‐Isolation Technique

New molecular hydrides have been prepared and characterized with the aid of the matrix isolation technique. These hydrides are products of spontaneous or photoactivated reactions taking place in the matrix. They show a remarkable structural variety reflecting the ability of H atoms to be positively or negatively polarized and to be engaged in terminal as well as bridging bonds. In addition to the academic interest in these molecules, the findings are of interest for applications. Thus the results will be discussed especially in the light of the increasing effort to fabricate new molecular hydrogen storage materials.