摘要
通过对一例蒙皂石-乙二醇有机复合体的结构研究,修正了传统的结构模型,并从化学键、有机分子构型及层间域的有效空间等方面综合考虑,证明了所提出的新结构模型的合理性。在新的结构模型中,乙二醇分子为梯形排列,单位晶胞所容纳的乙二醇分子为4个,每个乙二醇分子可与硅酸盐层基底氧形成两个氢键,并且乙二醇分子的构型显示了极性分子的性质,层间域Ca离子和剩余水分子正对于六方网环的中心,与另一侧的乙二醇分子相对应,新结构模型的可信度因子R=0.081。
The traditional structure model is refined by means of research on the structure model of smectiteethylene glycol organic complex,and the new model is confirmed rational from the chemical bonds,the shape of the organic molecules,and the area in the interlayer space.In the new model,the ethylene glycol molecules are laddershaped,and there are four organic molecules in the unit cell.Every organic molecule,which has polar characteristic,forms two hydrogen bonds with the basal oxygen of the silicate layers.The positions of the cations Ca and water molecules in the interlayer space are projected to the centers of the 6fold basal oxygens of the silicate layers,corresponding to the ethylene glycol molecules on the other side.The reliant factor R of the new model equals to 0081.
出处
《地质科技情报》
CAS
CSCD
北大核心
1998年第2期23-28,共6页
Geological Science and Technology Information
基金
国家自然科学基金
关键词
晶体结构
蒙皂石
乙二醇
有机复合体
结构模型
crystal structure,smectiteethylene glycol organic complex,refinement of crystal structure