Crystal Structure of the Monoprotonated Tripodal Ligand Tris(2,2’- bipyrid-6-yl) Methanol

Abstract

The tripodal bipyridine-based ligand tris(2,2'-bipyrid-6-yl) methanol (L 1 ) was shown in our previous work to have a strong steric preference for trigonal prismatic co - ordination environments with a series of transition met- als. We now report the crystal structure of the ligand framework, isolated in its monoprotonated form with a perchlorate counterion. The structure was solved in a monoclinic space group C2/c with cell parameters, a = 21.5885(3), b = 11.7485(3), c = 24.6939(6) A, � = 90°,  = 110.790(1) °,  = 90°, volume = 5855.4(2) A 3 , Z = 8. The 1 H NMR of the protonated ligand is similar to the parent ligand and showed the compound retained its 3-fold symmetry and all bipyridine groups were equivalent.