1 ONP O-nitrophenyl aminoethyldiphosphate beryllium trifluoride 1.000 2 NMQ N-methyl O-nitrophenyl aminoethyldiphosphate beryllium trifluoride 0.962 3 DAE O,P-dinitrophenyl aminoethyldiphosphate-beryllium trifluoride 0.893 4 MNQ M-nitrophenyl aminoethyldiphosphate beryllium trifluoride 0.786 5 PNQ P-nitrophenyl aminoethyldiphosphate beryllium trifluoride 0.786