We have previously reported that the reaction of [Pd(Me)2(k 2 -TMEDA)] with [1]2 affords directly the hexagonal planar palladium complex 6a. The analogous reaction of In the solid-state, 5 displays an apparent trigonal planar geometry. Three Zn-H units are coordinated to Pd in a planar environment. The Pd-Zn bond lengths range from 2.4660(6) to 2.4768(6) Å and are similar to, or slightly longer, than the sum of the covalent radii (Pauling, 2.53Å; Pyykkö, 2.38 Å). While the hydride positions from Xray diffraction studies should be treated with caution, the location of these sites has been complexes. The Zn-Pd-H bond angles around the trigonal plane can be grouped into two sets: a very acute set (40(15) -49(2)° XRD; 45 -47° DFT) and a less acute set (63(2)