Both M3O and M4O experimental structures are also reproduced very accurately shown in figure and respectively. We examined In, Fe, and Al-based trimeric oxo-centered metal nodes, In-In have a deviation of -0.087Å, Fe-Fe -0.163Å (refcode HAKSIY ) and Al-Al -0.173Å (refcode JALCAD ). Again, the M-O bonds are very conserved with all deviations less than ±0.1Å. Zn-based octahedron unit found in MOF-5 (e.g. refcode EDUSIF ) exhibits a Zn-Zn deviation of -0.0699Å and Zn-O error of -0.04Å.