Metal-organic frameworks are an exciting class of porous and crystalline materials exhibiting exceptional sorption properties. The growing interest in the community lies in the flexibility in structure design thanks to the wide range of organic ligands and metal clusters available facilitating the pore tuning compared to other porous materials. Herein inelastic neutron scattering (INS) is proposed to investigate a Cu (II) - framework NOTT-112 with various para-H2 gas loadings. Our earlier neutron powder diffraction (NPD) work already reported on the asymmetry of its exposed Cu sites. This will allow us to better understand the effect of the pore topology upon the adsorption site distribution with a direct comparison with the unusual INS features at around 9-10 meV obtained from NOTT-102 and NOTT-103 which were assigned by NPD study to para-H2 interactions with the Cu centres.