Synthesis, protonation and Cu 2+ co-ordination studies on a new family of thiophenophane receptors†

…, A Doménech, E García-España, JM Llinares…

Index: Aguilar, Juan A.; Diaz, Pilar; Domenech, Antonio; Garcia-Espana, Enrique; Llinares, Jose M.; Luis, Santiago V.; Ramirez, Jose A.; Soriano, Conxa Journal of the Chemical Society. Perkin Transactions 2, 1999 , # 6 p. 1159 - 1168

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Citation Number: 12

Abstract

The synthesis of the new thiophenophanes 2, 5, 8, 11-tetraaza [12](2, 5) thiophenophane (L1), 2, 6, 9, 13-tetraaza [14](2, 5) thiophenophane (L2) and 2, 5, 8, 11, 14-pentaaza [15](2, 5) thiophenophane (L3) is described. The stepwise protonation constants of the macrocycles are determined by pH-metric titration and their protonation patterns are analysed by means of 1H and 13C NMR spectroscopy. L1 and L2 present first protonation on the thenylic ...