Synthetic Route of 14187-32-7. Chemistry is an experimental science, and the best way to enjoy it and learn about it is performing experiments.Introducing a new discovery about 14187-32-7, Name is Dibenzo-18-crown-6
A conductance study concerning the interaction between ammonium ion and several crown ethers in acetonitrile solution has been carried out at different temperatures.The stability constants of the resulting 1:1 complexes at various temperatures were determined from the molar conductance-mole ratio data and found to vary in the order DC18C6 > 18C6 > DB30C10 > DB21C7 > DB24C8 > DB18C6 > 15C5 > B15C5.The enthalpy and entropy of complexation were determined from the temperature dependence of the formation constants.The influence on the thermodynamic data of different parameters such as cavity size and dimensionality of crown ethers, nature of substituents in the polyether ring, conformations of the free and complexed ligands, solvent-ligand interaction and number of N-H bonds available for hydrogen bonding are discussed. – Key words: Crown ethers; ammonium ion; complexation; acetonitrile; molar conductance; stability constant; enthalpy; entropy.
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