6533b836fe1ef96bd12a0801

RESEARCH PRODUCT

Complexation of the potassium ion by diaza crown compounds in aqueous solutions

Alessandro D'apranoBianca Sesta

subject

Aqueous solutionChemistryLigandHydrogen bondPotassiumInorganic chemistryBiophysicsConductancechemistry.chemical_elementPotassium nitrateBiochemistryCrown Compoundschemistry.chemical_compoundStability constants of complexesPhysical and Theoretical ChemistryMolecular Biology

description

The conductance behavior of potassium nitrate in water with and without 1,7,10,16-tetraoxa-4,13-diazacyclooctandecane[2.2] and 4,7,13,16,21,24-hexaoxa-1,10-diazabicyclo-8.8.8-exacosane[2.2.2] macrocyclic ligands have been studied in order to analyze the complexation behavior of potassium cations in water. The absence of the complexation found in the [2.2] system is discussed in terms of the ligand structural features (presence of hydrogen bond donor and acceptor sites). The ion pair association constant of potassium cryptate as obtained from conductance measurements is also reported and discussed.

https://doi.org/10.1007/bf00646431