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Table 1 Estimates of \({\varvec{K}}\) (\({\text{M}}^{ - 1}\)) and \({{\varvec{\Delta}}}_{{\varvec{C}}}\) (ppm) and their standard errors (SE) for all protons of acceptors

From: New insights into prediction of weak π–π complex association through proton-nuclear magnetic resonance analysis

Acceptors Protons \(K\) SE \({\Delta }_{C}\) SE
1,3-DNB H2 0.769 0.024 0.843 0.019
H4 0.707 0.017 0.928 0.017
H5 0.760 0.021 1.05 0.022
NB H2 0.293 0.019 0.595 0.034
H3 0.277 0.019 0.774 0.045
H4 0.259 0.020 0.757 0.052
1,2,4-TCB H3 0.175 0.011 0.808 0.047
H5 0.204 0.018 0.969 0.077
H6 0.221 0.012 0.939 0.045
1,2-DCB H3 0.186 0.023 0.634 0.067
H4 0.179 0.017 0.756 0.069
1,3-BTFMB H2 0.283 0.045 0.233 0.032
H4 0.320 0.013 0.671 0.023
H5 0.324 0.012 0.892 0.027
TA HRign 0.390 0.019 0.786 0.034
HAld 0.379 0.020 0.843 0.038
Py H2 0.070 0.023 0.732 0.227
H3 0.063 0.005 1.384 0.107
H4 0.082 0.009 1.191 0.127