Abstract

TORRES PALACIO, Paulo; CANO BENITEZ, Cristian A  and  DUARTE RUIZ, Álvaro. Self-assembly of a supramolecular square between [Ni(dppe)(TOF)₂] and 4,4'-bipyridine. Rev.Colomb.Quim. [online]. 2013, vol.42, n.2, pp.48-55. ISSN 0120-2804.

The main interest of this research is to contribute to the development and understanding of supramolecular chemistry and molecular architectures, which are constructed by the self-assembly of supramolecular entities. Therefore, the synthesis and characterization (IR, UV, ¹H NMR, ³¹P, ¹⁹F, ¹H-¹H COSY) of a nickel (II) supramolecular square [7] was performed through the synthesis between nickel chloride [1]and diphenylphosphinoethane (dppe) [2] to form the precursor complex [Ni(dppe)Cl₂] [3]. This was followed by the synthesis of the complex of interest, [Ni(dppe)(TOF)₂] [5], using the precursor and silver trifluoromethanesulfonate (Ag-TOF). Finally, the self-assembly was performed between the complex [1,2-bis (diphenylphosphinoethane) bistriflatonickel(II)] [Ni(dppe)(OSO₂CF₃)₂] [5] and the organic ligand 4,4'-bipyridine [6], which act as vertex and edge, respectively. According to various analyses, it was found that the self-assembly generated only one supramolecular species; a square is the most probable thermodynamic structure.

Keywords : nickel(II) coordination complex; dppe; 4,4'-bipyridine; self-assembly; Supramolecular square.

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