ChemInform Abstract: Stabilization of 3d Transition Metal Hydrido Complexes in SrH2Mg2[Co(I)H5], BaH2Mg5[Co(‐I)H4]2, and RbH2Mg5[Co(‐I)H4Ni(0)H4] via Easily Polarizable Hydride Ligands. Issue 25 (June 2016)