Experimental data for: http://dx.doi.org/10.1021/jacs.5b05434 Single-Crystal to Single-Crystal Mechanical Contraction of Metal-Organic Frameworks through Stereoselective Post-Synthetic Bromination Ross J. Marshall, Sarah L. Griffin, Claire Wilson and Ross S. Forgan J. Am. Chem. Soc. Published online as a Just Accepted Manuscript, 15th July 2015