Crystal structure of (4-methoxyphenyl)[(4-methoxyphenyl) phosphonato]dioxidophosphate(1-) 2-amino-6-benzyl-3-ethoxycarbonyl-4,5,6,7-tetrahydrothieno[2,3-c] pyridin-6-ium

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Mague J. T., Mohamed S. K., AKKURT M., Younes S. H. H., Ahmed E. K., Albayati M. R.

ACTA CRYSTALLOGRAPHICA SECTION E-CRYSTALLOGRAPHIC COMMUNICATIONS, cilt.71, 2015 (ESCI) identifier identifier identifier

Özet

The asymmetric unit of the title mol-ecular salt, C17H21N2O2S+ center dot C14H15O7P2- , comprises two cations and two anions. Each cation features an intra-molecular N-H center dot center dot center dot O hydrogen bond, which closes an S(6) ring; in each case the hydro-pyridine ring adopts a half-chair conformation. In the anions, the dihedral angles between the aromatic rings are 64.1 (2) and 54.9 (2)degrees. In each case, the diphosphate groups are close to eclipsed [C-P center dot center dot center dot P-C pseudo-torsion angles = 11.6 (2) and -19.3 (2)degrees]. One of the meth-oxy groups in each anion is disordered over two orientations in a 0.539 (18):0.461 (18) ratio in one anion and 0.82 (2):0.18 (2) in the other. In the crystal, O-H center dot center dot center dot O and N-H center dot center dot center dot O hydrogen bonds link the components into [100] chains. Numerous C-H center dot center dot center dot O inter-actions cross-link the chains into a three-dimensional network.