An interesting In(III)-framework has been synthesized at the University of Nottingham by the group of research of Martin Schroder. This metal-organic framework is based on [In(CO2R)4] building unit and quaterphenyl-tetracarboxylic acid ligand as it has been resolved by X-ray single crystal experiment leading to In(III)-L4. Hydrogen adsorption experiment at 78 K showed a hysteresis loop in the adsorption and desorption kinetics for In(III)-L4, while the isotherm on a Li-exchanged compound shows completely perfect reversibility. We propose to identify and characterize the adsorption site distribution by performing a full isotherm using D2 gas. This should help us to determine the location of the remaining H2 and in turn design structure with such properties.