Acta Cryst. (2014). E70, o548
[ doi:10.1107/S1600536814007776 ]
Abstract: In the title compound, C18H21N2O6P, the dihedral angle between the benzene and phenyl rings is 85.1 (2)°. In the crystal, molecules are linked via pairs of N-HO(=P) hydrogen bonds, forming inversion dimers with graph-set notation R22(10). One of the ethyl groups is disordered over two sets of sites, with occupancies 0.746 (11) and 0.254 (11).
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