Crystal Structure of the Monoprotonated Tripodal Ligand Tris(2,2’- bipyrid-6-yl) Methanol
Cuhananthan W. Sathiyajith*, James C. Knight, Benson M. Kariuki, Peter G. Edwards, Angelo J. Amoroso*
Identifiers and Pagination:Year: 2014
First Page: 15
Last Page: 20
Publisher Id: CHEM-1-15
Article History:Received Date: 24/07/2014
Revision Received Date: 05/09/2014
Acceptance Date: 15/09/2014
Electronic publication date: 27/11/2014
Collection year: 2014
open-access license: This is an open access article licensed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0/) which permits unrestricted, non-commercial use, distribution and reproduction in any medium, provided the work is properly cited.
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 metals. 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) Å, α = 90°, β = 110.790(1) °, γ = 90°, volume = 5855.4(2) Å3 , Z = 8. The 1H 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.
We report the crystal structure of the protonated form a tripodal bipyridine-based ligand framework with a strong steric preference for trigonal prismatic co-ordination environments.