Revista Colombiana de Química
Print version ISSN 0120-2804
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  by the self-assembly of complex [Pd(CF3SO3)2(dppe)]  and the organic ligand 4,4'-Bipyridine . There was evidence that  was obtained together with another supramolecular species , assigned to a triangular macrocycle. Structures  and  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  and 30 % of .
Keywords : Metal-organic polygon; self assembly; supramolecular square; supramolecular triangle.