Crystal structure and Hirshfeld surface analysis of [N(CH3)4][2,2′-Fe(1,7-closo-C2B9H11)2]

The two red spots presented on the anionic and cationic HS presentations give an idea about the attendance of two different interactions H⋯H related the same proton, from the [N(CH3)4] cation, with two different H-B vertex from the adjacent anion.222