Abstract

POSADA, Julian; DUARTE, Alvaro; AVELLA, Eliseo  and  ECHEGOYEN, Luis. SYNTHESIS AND CHARACTERIZATION OF A SUPRAMOLECULAR SQUARE FROM THE SELF-ASSEMBLY BETWEEN THE COMPLEX [1,2-BIS(DIPHENYLPHOSPHINO) ETHANE] BISTRIFLUOROMETHANESULFONATE PALLADIUM (II) AND 4,4'-BIPYRIDINE. Rev.Colomb.Quim. [online]. 2011, vol.40, n.3, pp.293-304. ISSN 0120-2804.

For the first time we synthesized and characterized (IR, UV, NMR ¹H, ³¹P, ¹⁹F), a new supramolecular square [3] by the self-assembly of complex [Pd(CF₃SO₃)₂(dppe)] [1] and the organic ligand 4,4'-Bipyridine [2]. There was evidence that [3] was obtained together with another supramolecular species [4], assigned to a triangular macrocycle. Structures [3] and [4] were elucidated based on chemical shifts, the proportionality between their integrals and the coupling patterns of the ¹H NMR and the COSY spectra. Based on signal intensities corresponding to the two supramolecular species we determined the composition of the mixture to be 70 % of [3] and 30 % of [4].

Keywords : Metal-organic polygon; self assembly; supramolecular square; supramolecular triangle.