Self-assembly of a supramolecular square between [Ni(dppe)(TOF)2] and 4,4'-Bipyridine

• Main Authors: Paulo Torres, Cristian A. Cano Benítez, Álvaro Duarte Ruiz
• Format: Article
• Language: English
• Published: Universidad Nacional de Colombia 2013-08-01
• Series: Revista Colombiana de Química
• Subjects: Compuesto de coordinación de níquel(II); dppe; 4,4'-bipiridina; auto-ensamblaje; cuadrado supramolecular
• Online Access: http://www.revistas.unal.edu.co/index.php/rcolquim/article/view/45898

<p>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 <strong>[7]</strong> was performed through the synthesis between nickel chloride <strong>[1] </strong>and diphenylphosphinoethane (dppe) <strong>[2]</strong> to form the precursor complex [Ni(dppe)Cl₂] <strong>[3]</strong>. This was followed by the synthesis of the complex of interest, [Ni(dppe)(TOF)₂] <strong>[5]</strong>, 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] <strong>[5]</strong> and the organic ligand 4,4'-bipyridine <strong>[6]</strong>, which act as vertex and edge, respectively.</p><p>According to various analyses, it was found that the self-assembly generated only one supramolecular species; a square is the most probable thermodynamic structure.</p>