| Autor: |
Gutowska N; Department of Inorganic and Analytical Chemistry, Faculty of Chemistry, University of Lodz, Tamka 12, 91403 Łódź, Poland., Seliger P; Department of Inorganic and Analytical Chemistry, Faculty of Chemistry, University of Lodz, Tamka 12, 91403 Łódź, Poland., Romański J; Department of Organic and Applied Chemistry, Faculty of Chemistry, University of Lodz, Tamka 12, 91403 Łódź, Poland., Zięba M; Centre of Polymer and Carbon Materials, Polish Academy of Sciences, Marii Curie Skłodowskiej 34, 41800 Zabrze, Poland., Adamus G; Centre of Polymer and Carbon Materials, Polish Academy of Sciences, Marii Curie Skłodowskiej 34, 41800 Zabrze, Poland., Kowalczuk M; Centre of Polymer and Carbon Materials, Polish Academy of Sciences, Marii Curie Skłodowskiej 34, 41800 Zabrze, Poland. |
| Abstrakt: |
In the investigation presented here the synthesis of new lariat ether derivative obtained from the modification of tetrapyrrolidinyl-PNP-crown ether macrocycle is described. The polyheterotopic molecular coreceptor consisted of the replacement of chlorine atoms with an optically active (S)-(1-benzylpyrrolidin-2-yl) methanamine. The structure was confirmed by using elemental analysis, mass spectrometry, and NMR spectroscopy. This work covers results concerning the complexing properties of the new ligand towards Ag + , Cu 2+, Co 2+, Ni 2+ , and Zn 2+ ions. The formation of non-covalent complexes of 1:1 stoichiometry with the Cu 2+, Co 2+, Ni 2+ , and Zn 2+ ions have been confirmed by mass spectrometry. Due to the previous work and application possibilities, a large emphasis was put on the investigation of the complexation ability of lariat ether with silver (I) cation to determine stability constants by direct potentiometric method. In this case, the formation of four different forms of complexes AgL, Ag 2 L, Ag 3 L, and Ag 4 L has been proved. The observed unusual binding through the nitrogen atoms from the exocyclic substituents may provide the structural unit to build a new coordination polymers. |
