Abstract
The title compound, [Na2(C2H8NO6P2)Cl(H2O)2]n, has a polymeric two-dimensional structure extending parallel to (001). The asymmetric unit contains two Na+ cations located on a centre of symmetry and on a mirror plane, respectively, one half of a bis-phosphonate anion (the entire anion is completed by mirror symmetry), one chloride anion on a mirror plane and one water molecule in general positions. The two Na+ cations exhibit distorted octahedral NaCl2O4 coordination polyhedra, each consisting of two deprotonated O atoms of the bis-phosphonate anion, of two water molecules and of two chloride anions. Strong O—H⋯O hydrogen bonds between the –OH group and one of the free O atoms of the bis-phosphonate anion connect adjacent layers along [100], supported by N—H⋯Cl interactions. Intralayer O—H⋯O and N—H⋯O hydrogen bonds are also observed.
Highlights
Background functionGSAS Background function number 1 with 20 terms
The asymmetric unit contains two Na+ cations located on a centre of symmetry and on a mirror plane, respectively, one half of a bis-phosphonate anion, one chloride anion on a mirror plane and one water molecule in general positions
For background and details of methods applied in data collection and Rietveld refinement, see: Thompson et al (1987); Finger et al (1994); Stephens (1999); Von Dreele (1997); Boultif & Louër (2004); RodriguezCarvajal (2001); Roisnel & Rodriguez-Carvajal (2001); Toby
Summary
Poly[[l-(1-ammonioethane-1,1-diyl)bis(hydrogenphosphonato)]diaquachloridodisodium]: a powder X-ray diffraction study Department of Chemistry, Atomic Energy Commission of Syria (AECS), PO Box 6091, Damascus, Syrian Arab Republic 0.029; wR factor = 0.038; data-to-parameter ratio = 39.0.
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