In two previous studies, we compared a total of 19 X-ray crystallographic structures of Sn hypercoordinate compounds with those calculated by a selection of computational DFT methods to assess which level of theory provided the best structural predictions. Although comparisons between experimental solid state and calculated gas phase structures are problematic for a variety of reasons, there are few other practical options. In general, adding empirical dispersion to the computational methods significantly improved the accuracy of the calculated structures. The B3PW91 and PBE0 ("PBE1PBE") functionals supplemented with Grimme's D3 empirical dispersion function and Becke-Johnson damping (GD3BJ) were the best of ten methods studied; the M052X 31 method with Grimme's D3 empirical dispersion (GD3) performed comparably. In this study, nine crystallographic structures were compared using the three best DFT methods from the previous work as well as the MN15 functional with GD3BJ empirical dispersion (see SI, Table -1 for details). The four DFT methods used in geometry optimizations gave similar results, with the PBE0-GD3BJ method generally providing the best prediction of solid-state molecular geometries (Table -1), as previously observed. The M05-2X method also performs well.