30787-74-7Relevant articles and documents
Development of Dpa-based imidazole zinc anion receptors
Salo, Taina M.,Helaja, Juho,Koskinen, Ari M.P.
, p. 2977 - 2980 (2006)
A synthetic route for a new, phenolic Dpa-based aza ligand is presented and its chelation with zinc ions and imidazole were studied using UV/vis and mass spectrometry. A bathochromic shift of 30 nm was observed for the 2*Zn complex of the ligand in UV/vis
Syntheses of four new pyridinium phenolates with caged phenolate functionalities as chromophores for quadratic optics
Ay, Emel,Chaumeil, Hélne,Barsella, Alberto
experimental part, p. 628 - 635 (2012/01/14)
Semi-empirical calculations as well as our preliminary studies indicate an increase of the nonlinear response of pyridinium phenolates with the raise of their interplanar angle. Unfortunately, the tendency of previously synthesized zwitterionic compounds
Development of bis(2-picolyl)amine-zinc chelates for imidazole receptors
Routasalo, Taina,Helaja, Juho,Kavakka, Jari,Koskinen, Ari M. P.
experimental part, p. 3190 - 3199 (2009/04/07)
New phenyl and phenol bis(2-picolyl)amine (Dpa) derivatives have been synthesized in order to generate zinc chelates for imidazole anion receptors. Previously, binuclear phenolic zinc and copper chelates have shown affinity for pyrophosphate and guanidine anions, respectively. Herein we report significant imidazole affinity increasing from 2.38 × 106 to 2.90 × 107 for phenol-bridged binuclear zinc-Dpa chelates, as evidenced by dynamic and titration 1H NMR studies. Among the Dpa chelates investigated, the zinc-coordinated phenol group plays a crucial role in the mechanism of anion binding. Low-temperature 1H NMR experiments suggest a σν-symmetric geometry for the imidazole chelate. Computational DFT studies at the B3LYP level of theory imply that imidazole binding displaces the phenol bridge between the zinc ions. Wiley-VCH Verlag GmbH & Co. KGaA, 2008.