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. 2022 Dec 16;12:21799. doi: 10.1038/s41598-022-24760-y

Table 4.

1H NMR analysis of linear alkylaminde-type quaternary ammonium methylcarbonates.

Abbreviation Structure 1H NMR
MeC12 graphic file with name 41598_2022_24760_Figd_HTML.gif 0.86–0.89 [t, 3H, –COCH2CH2(CH2)8CH3]; 1.26–1.38 [m, 16H, –COCH2CH2(CH2)8CH3]; 1.57–1.60 [m, 2H, –COCH2CH2(CH2)8CH3]; 2.03–2.09 [m, 2H, –N+CH2CH2CH2N–]; 2.28–2.32 [t, 2H, –COCH2CH2(CH2)8CH3]; 3.09 [s, 3H, –N(CH3)–]; 3.36 [s, 9H; –N+(CH3)3]; 3.44–3.57 [m, 7H; –N+CH2CH2CH2N–, CH3CO3−]
MeC14 graphic file with name 41598_2022_24760_Fige_HTML.gif 0.86–0.89 [t, 3H, –COCH2CH2(CH2)8CH3]; 1.26–1.38 [m, 16H, –COCH2CH2(CH2)8CH3]; 1.57–1.60 [m, 2H, –COCH2CH2(CH2)8CH3]; 2.03–2.09 [m, 2H, –N+CH2CH2CH2N–]; 2.28–2.32 [t, 2H, –COCH2CH2(CH2)8CH3]; 3.09 [s, 3H, –N(CH3)–]; 3.36 [s, 9H; –N+(CH3)3]; 3.44–3.57 [m, 7H; –N+CH2CH2CH2N–, CH3CO3−]
MeC16 graphic file with name 41598_2022_24760_Figf_HTML.gif 0.86–0.89 [t, 3H, –COCH2CH2(CH2)8CH3]; 1.26–1.38 [m, 16H, –COCH2CH2(CH2)8CH3]; 1.57–1.60 [m, 2H, –COCH2CH2(CH2)8CH3]; 2.03–2.09 [m, 2H, –N+CH2CH2CH2N–]; 2.28–2.32 [t, 2H, –COCH2CH2(CH2)8CH3]; 3.09 [s, 3H, –N(CH3)–]; 3.36 [s, 9H; –N+(CH3)3]; 3.44–3.57 [m, 7H; –N+CH2CH2CH2N–, CH3CO3−]