Low oxidation state p-block metal-metal bonded complexes are the most fundamentally interesting main
group systems studied today. In an internationally acclaimed pilot study, this area has been extended to the
s-block for the first time with the preparation of landmark magnesium(I) compounds containing Mg-Mg
bonds. We will systematically expand and exploit this completely new field by targeting a variety of M-M (M =
Be, Mg or Ca) bonded dimers and clusters. Their application as bespoke reducing agents in organic and
organometallic synthesis, and as models for Mg containing hydrogen storage materials, will be methodically
explored. This integrated, multidisciplinary project promises breakthrough advances of major international
significance.