Synthesis and 2D‐(1H,103Rh)‐NMR Study of the First “Non‐Classical” Polyhydrido Complex Stabilized by a Nitrogen Donor Ligand

The H2 ligand in 1 is stabilized only by nitrogen ligands. 1H-Detecting 2D-(1H,103Rh)-NMR spectroscopy, an NMR procedure in the preliminary phase of which a heteronuclear two-spin coherence is excited, together with variation of the 1H-transmitter frequency, made it possible to read directly from the spectrum both the chemical shift of the metal and the number of hydride ligands present.