We synthesized samples of Ni(PyC) 2 and Ni(PyC-m-NH 2 ) 2 by de novo, solvothermal synthesis and subsequently activated it (to evacuate solvent from its pores) by raising the temperature and pulling a vacuum. See Sec. . . for the detailed synthesis and activation procedures. We conducted an elemental analysis (composition) of the as-synthesized, activated, and air-exposed samples of both Ni(PyC) 2 and Ni(PyC-m-NH 2 ) 2 . See Sec. . . for methods and Tab. S for results. After activation, both samples undergo a slight decrease in C and H content, attributed to the removal of the solvent (DMF and methanol) from the pores of the MOF by the activation process. Compared to the parent Ni(PyC) 2 , Ni(PyC-m-NH 2 ) 2 has a higher N content due to the appended NH 2 group on the ligand.