Hydrogen storage in dinuclear Pt(II) metallacycles

Hydrogen gas physisorption in two distinct dinuclear Pt(II) metallacycles was investigated with 2H nuclear magnetic resonance (NMR) spectroscopy. Hydrogen adsorption isotherm data and 2H NMR spectroscopy indicated that hydrogen storage occurs via condensation within the cavities of one of the macrocycles and at the interstitial sites in the other. In addition, this study further supports the notion that heat of adsorption and pore size play critical roles in hydrogen storage.