Figure 3: Catalyst initiation and molecular structure of active catalyst homologue 3b.
From: A prolific catalyst for dehydrogenation of neat formic acid

3b={[(tBu2PCH2(2-py))Ir(H)]2(μ2-H)(μ2-κ,κ′-O2CCH3)2}+. Hydrogen atoms omitted. Ellipsoids are drawn at the 50% probability level. counterion, trifluoromethanesulfonate; solv, solvent.