摘要
运用碳化法从白云岩或菱镁矿中提取各类镁盐时,某些条件下容易形成五水合碳酸镁中间产物。与此产物对应的天然矿物是自然界很少见且很不稳定的五水碳镁石。本文作者根据晶体结构分析结果,重新对粉晶X射线衍射数据进行指标化;讨论了该晶体的分子结构,指出它是一种由双络离子组成的新型无机盐水合物;阐明了氢键的存在及其在该盐分子结构和晶体结构中所起的作用。
Magnesium carbonate pentahydrated MgCO_3·5H_2O, a medium product during extracting magnesium compounds from dolomite or magnasite using the carbonation process, is easy of to form. The natural mineral corresponding with MgCO_3·5H_2O is known as lansfordite, which is unstable and rarely found in nature. The X-ray powder diffraction data of MgCO_3·5H_2O were obtained and the reindexing of diffraction patterns has been taken according to the crystal structure analysis.The research results of molecular structur...
出处
《有色金属》
CSCD
1989年第4期77-81,共5页
Nonferrous Metals
关键词
五水合碳酸镁
五水碳镁石
粉晶衍射分析
配位多面体
氢键
Magnesium carbonate pentahydrated
Lansfordite
X-ray powder diffraction analysis
Coordination polyhedron
Hydrogen bond
