| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1312442 | Inorganica Chimica Acta | 2012 | 6 Pages |
A general strategy for the assembly of dendrimeric metallo-cluster species based on tritopic trinuclear ruthenium acetate complexes is demonstrated. First, a central core consisting of a [Ru3O(CH3COO)6(TPEB)3]PF6 complex (G0), where TPEB is the tripodal 1,3,5-tri-4-pyridyl-1,2-ethenylbenzene ligand, was synthesized and then reacted with the end-capping complex [Ru3O(CH3COO)6(py)2(MeOH)]PF6, thus composing the first generation shell of a dendrimer encompassing twenty-one ruthenium ions (G1). The core and dendrimeric complexes were characterized by elemental analysis, UV–Vis, 1H NMR, ESI-MS spectrometry and Differential pulse voltammetry. All results were consistent with the structure of that multinuclear cationic dendrimeric species. The isotopologic profile of daughter fragments and the strength of the metal–ligand bonds were carefully investigated providing the fragmentation pathway for the metallo-dendrimer upon ESI-MS dissociation conditions.
Graphical abstractA general strategy for the assembly of dendrimeric metallo-cluster is demonstrated using triangular triruthenium acetate complexes and tripodal TPEB bridging ligands, based on the coordination assembly approach. The dendrimeric species was characterized by NMR and ESI-MS spectrometry. Isotopologic profile of daughter fragments was carefully investigated providing the fragmentation pathway for the metallo-dendrimer.Figure optionsDownload full-size imageDownload as PowerPoint slideHighlights► A general strategy for coordinative assembly of metallo-dendrimers is demonstrated. ► Precursor and dendrimers were characterized by spectroscopic method. ► ESI-MS data show characteristic isotopic patterns and ligand dependent dissociations.
