Al-Dajani Mohammad T M, Abdallah Hassan H, Mohamed Nornisah, Quah Ching Kheng, Fun Hoong-Kun
Acta Crystallogr Sect E Struct Rep Online. 2010 Jan 9;66(Pt 2):m138-9. doi: 10.1107/S1600536810000681.
A monoclinic polymorph of the title compound, Na(C(4)H(5)O(6))(H(2)O), is reported and complements an ortho-rhom-bic form [Kubozono, Hirano, Nagasawa, Maeda & Kashino (1993 ▶). Bull. Chem. Soc. Jpn, 66, 2166-2173]. The asymmetric unit contains a hydrogen tartrate anion, an Na(+) cation and a water mol-ecule. The Na(+) ion is surrounded by seven O atoms derived from one independent and three symmetry-related hydrogen tartrate anions, and a water mol-ecule, forming a distorted penta-gonal-bipyramidal geometry. Independent units are linked via a pair of inter-molecular bifurcated O-H⋯O acceptor bonds, generating an R(2) (1)(6) ring motif to form polymeric two-dimensional arrays parallel to the (100) plane. In the crystal packing, the arrays are linked by adjacent ring motifs, together with additional inter-molecular O-H⋯O inter-actions, into a three-dimensional network.
报道了标题化合物[Na(C₄H₅O₆)(H₂O)]ₙ的一种单斜晶系多晶型物，它补充了一种正交晶系形式[久保园、平野、长泽、前田和鹿野（1993▶）。《日本化学会通报》，66，2166 - 2173]。不对称单元包含一个酒石酸氢根阴离子、一个Na⁺阳离子和一个水分子。Na⁺离子被来自一个独立的和三个对称相关的酒石酸氢根阴离子的七个O原子以及一个水分子所包围，形成扭曲的五角双锥几何构型。独立单元通过一对分子间分叉的O - H⋯O受体键相连，生成一个R₂²(₆)环 motif，形成平行于(100)平面的二维聚合物阵列。在晶体堆积中，这些阵列通过相邻的环 motif 以及额外的分子间O - H⋯O相互作用连接成三维网络。
