The coordination of silanes and boranes to transition metal centers is of fundamental interest to catalysis. For example, addition of silanes to transition metals has the potential to lead to the formation of -silane complexes which are key intermediates in dehydrocoupling and polymerization of silanes, along with hydrosilylation of unsaturated carbon-carbon and carbon-heteroatom bonds. Similarly, -borane complexes, derived from addition of boranes to transition metals, are widespread and underpin catalytic hydroboration and C-H borylation methodologies. In the past few years, the -complex concept has expanded to include the coordination of molecular zinc hydride complexes to other transition metal centers (TM) creating new heterometallic TM-H-Zn motifs. These species have recently been invoked as intermediates in the catalytic C-H zincation of aromatic and heteroaromatic substrates. Despite notable advances in this area, all the reported complexes described to date are well-defined closed-shell species based on 16-or 18-electron count at the transition metal. Paramagnetic -complexes involving zinc are essentially unknown. A handful of related paramagnetic species have been described that contain Ti-H-M or Zr-H-M (M = Al, Mg) groups. The paramagnetic Ni-H-Fe core is also well-known in hydrogenase enzymes. Identification of systems that combine a transition metal with (at least) one unpaired electron and a coordinated zinc hydride bond would be unique. Such species could lead to discovery of new types of reactivity and new directions in catalysis.