首页> 外文期刊>Acta Crystallographica, Section B. Structural Science >Supercell and subcell description of the crystal structure of triammonium bis(O-phospho-L-serinate) trihydrate.
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Supercell and subcell description of the crystal structure of triammonium bis(O-phospho-L-serinate) trihydrate.

机译:双(O-磷酸-L-丝氨酸盐)三水合三铵晶体结构的超级电池和子电池描述。

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摘要

The X-ray diffraction pattern obtained for a crystal of triammonium bis(O-phospho-L-serinate) trihydrate at 100 K displays the presence of weak superstructure reflections with odd l indices. Omission of the superstructure reflections leads to orthorhombic Laue symmetry. The structure may be solved and refined in the space group P2(1)2(1)2(1) as an average structure omitting the weak reflections. The model reveals the presence of O-phospho-L-serinate monoanions, ammonium cations and partly disordered water molecules. The structure solution for the whole data set could be obtained only in the space group P2(1). There are two monoanions and two dianions of O-phospho-L-serinate per asymmetric unit, as well as six ordered ammonium cations and six water molecules.
机译:对双水合双(O-磷酸-L-丝氨酸)三铵晶体在100 K下获得的X射线衍射图显示弱的超结构反射具有奇数l指数。省略上部结构反射会导致正交的劳厄对称。可以在空间组P2(1)2(1)2(1)中解析和完善该结构,将其作为忽略微弱反射的平均结构。该模型揭示了O-磷酸-L-丝氨酸单阴离子,铵阳离子和部分无序的水分子的存在。整个数据集的结构解只能在空间组P2(1)中获得。每个不对称单元有两个O-磷酸-L-丝氨酸阴离子单阴离子和两个阴离子,以及六个有序的铵阳离子和六个水分子。

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