α‐substitued phosphoryl compounds (IV). The crystal and molecular structure of diethyl[bis‐(p‐chlorophenoxy)‐methan]‐phosphonate, C17H19O5PCl2

Abstract

AbstractDiethyl‐[bis‐(p‐chlorophenoxy)‐methan]‐phosphonate crystallizes in the triclinic space group P 1 with two molecules per unit cell. The lattice parameters are a = 8.757 Å, b = 10.479 Å, c = 12.878 Å, α = 82.21°, β = 116.27°, γ = 113.80°. With X‐ray diffraction data, collected on an automatic four circle diffractometer, the crystal structure was solved by direct methods and refined to an R‐value of 0.049 for 3116 measured and symmetrically independent reflections. The substance is a derivative of acetales of formyl phosphonic acid esters. Correlations between the geometry of the structure and NMR‐data are of interest.