TY - JOUR
T1 - 13C n.m.r. investigation on the first and second nitrogen protonation in the diazanaphthalenes
AU - van de Weijer, Peter
AU - van den Ham, Dirk M.W.
AU - van der Meer, Douwe
PY - 1977
Y1 - 1977
N2 - The 13C chemical shifts of the diazanaphthalenes have been recorded as a function of the pH value, providing classical titration curves. From these curves the pK1 and pK2 values have been determined taking into account the activity coefficients. The changes in 13C chemical shift under the influence of nitrogen protonation (Δδ) can be described by two protonation parameter sets.
AB - The 13C chemical shifts of the diazanaphthalenes have been recorded as a function of the pH value, providing classical titration curves. From these curves the pK1 and pK2 values have been determined taking into account the activity coefficients. The changes in 13C chemical shift under the influence of nitrogen protonation (Δδ) can be described by two protonation parameter sets.
KW - IR-70731
U2 - 10.1002/mrc.1270090508
DO - 10.1002/mrc.1270090508
M3 - Article
VL - 9
SP - 281
EP - 284
JO - Magnetic Resonance in Chemistry
JF - Magnetic Resonance in Chemistry
SN - 0749-1581
IS - 5
ER -