Disodium (2RS,3SR)-tartrate
نویسندگان
چکیده
The asymmetric unit of the anhydrous title compound, 2Na(+)·C(4)H(4)O(6) (2-), contains two sodium cations and one tartrate anion. Each sodium ion is six coordinate, with bonding to six O atoms from both the carboxyl-ate and hydroxyl groups of the anion. A three-dimensional coordination network is formed with sodium ions stacking in layers along the c-axis direction. This network is supported by additional O-H⋯O hydrogen bonds.
منابع مشابه
(1RS,2RS,3SR,5RS,7RS)-2,5-Dichloro-8-oxabicyclo[5.1.0]octan-3-ol
In the title compound, C(7)H(10)Cl(2)O(2), the seven-membered ring displays a chair conformation. In the crystal, the hy-droxy H atom is equally disordered over two orientations, and links with an adjacent mol-ecule via an O-H⋯O hydrogen bond in both cases. Weak inter-molecular C-H⋯O hydrogen bonding is also a feature of the crystal structure.
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In the title compound, C(34)H(30)N(2)O(6)·0.5C(4)H(8)O(2), there are two mol-ecules in the asymmetric unit and the structure is stabilized by C-H⋯O inter-actions. The two nonsolvent mol-ecules of the asymmetric unit are linked together by a weak C-H⋯O hydrogen bond. The ethyl acetate mol-ecule is present as a space filler and does not participate in the hydrogen-bonding network.
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The mol-ecule of the title compound, C(26)H(28)O(5), is chiral with five stereogenic centres; however, the centrosymmetric triclinic group gives a racemic crystal. The fused ring system adopta boat conformation in which the cyclo-propane ring plane is roughly perpendicular to the styryl group plane, forming a dihedral angle of 74.78 (19)°. The dihedral angle between the two benzene rings is 77....
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The aim of the current study was to develop a simple, precise, and accurate capillary zone electrophoresis method for the determination of zolpidem tartrate in tablet dosage form. Separation was conducted in normal polarity mode at 25°C, 22 kV, using hydrodynamic injection for 10 s. Separation was achieved using a background electrolyte of 20 mM disodium hydrogen phosphate adjusted with phospho...
متن کاملتأثیر یون تارتارات بر رفتار جدایش روی و کادمیم در محلول سولفاتی
The aim of this study was to investigate the effect of tartrate ion (C4H4O62-) on the extraction and separation of zinc and cadmium using D2EHPA extractant. The presence of tartrate ion in the solution caused the shift of the extraction curve of zinc and cadmium to the more alkaline pH; however, the shifting rate for the cadmium extraction curve was more significant. In the absence of tartrat...
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