A1 Vertaisarvioitu alkuperäisartikkeli tieteellisessä lehdessä
INTERACTION OF PYROPHOSPHATE ION WITH DI-AMINES, TRI-AMINES AND TETRAAMINES IN AQUEOUS-SOLUTION - A POTENTIOMETRIC AND CALORIMETRIC STUDY
Tekijät: LABADI I, JENEI E, LAHTI R, LONNBERG H
Kustantaja: MUNKSGAARD INT PUBL LTD
Julkaisuvuosi: 1991
Lehti:: Acta Chemica Scandinavica
Tietokannassa oleva lehden nimi: ACTA CHEMICA SCANDINAVICA
Lehden akronyymi: ACTA CHEM SCAND
Vuosikerta: 45
Numero: 10
Aloitussivu: 1055
Lopetussivu: 1059
Sivujen määrä: 5
ISSN: 0904-213X
DOI: https://doi.org/10.3891/acta.chem.scand.45-1055
Tiivistelmä
Successive macroscopic pK(a) values have been determined potentiometrically for the conjugate acids of spermidine (4-azaoctane-1,8-diamine), spermine (4,9-diazadodecane-1,12-diamine) and some acylic diamines at various ionic strengths in the absence and presence of tetrasodium pyrophosphate. The stability of the amine/pyrophosphate adducts have been estimated on the basis of effects of the pyrophosphate ion on the apparent acidity constants of the amines. Stoichiometry and thermodynamics of adduct formation have been elucidated from microcalorimetric measurements.
Successive macroscopic pK(a) values have been determined potentiometrically for the conjugate acids of spermidine (4-azaoctane-1,8-diamine), spermine (4,9-diazadodecane-1,12-diamine) and some acylic diamines at various ionic strengths in the absence and presence of tetrasodium pyrophosphate. The stability of the amine/pyrophosphate adducts have been estimated on the basis of effects of the pyrophosphate ion on the apparent acidity constants of the amines. Stoichiometry and thermodynamics of adduct formation have been elucidated from microcalorimetric measurements.