1 MNQ M-nitrophenyl aminoethyldiphosphate beryllium trifluoride 1.000 2 ONP O-nitrophenyl aminoethyldiphosphate beryllium trifluoride 0.786 3 PNQ P-nitrophenyl aminoethyldiphosphate beryllium trifluoride 0.786 4 NMQ N-methyl O-nitrophenyl aminoethyldiphosphate beryllium trifluoride 0.759 5 DAE O,P-dinitrophenyl aminoethyldiphosphate-beryllium trifluoride 0.710