The structure of Dimethylaminomethanediphosphonic Acid, C3H11NO6P2

Abstract
Mr = 218.9, monoclinic, P 21/c, a = 6.870(1), b = 10.824(2), c = 11.337(2) Å, β = = 94.59(2)0, Z = 4, V = 840.5(3) Å3, Dx = 1.73 Mgm−3. Final R = 0.033 for 2648 independent reflections, excluding those with |F0| < 3σ(F0). Intensities were measured with an automatic diffractometer. This organophosphorous compound is characterized by two PC bonds. Four symmetrically independent intermolecular hydrogen bonds determine the threedimensional packing of the molecules and the unique chemical properties of the campound.