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首页> 外文期刊>Journal of Crystal Growth >The crystal habit of ciprofloxacin hydrochloride monohydrate crystal
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The crystal habit of ciprofloxacin hydrochloride monohydrate crystal

机译:盐酸环丙沙​​星一水合物晶体的晶体习性

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摘要

Crystals with two different habits (e.g. needle-like and plate-like) of ciprofloxacin hydrochloride monohydrate (CPFX) were prepared from aqueous solution by varied methods. These crystals were identified by various means such as scanning electron microscope (SEM), differential scanning calorimetry (DSC), thermogravimetry (TG), and X-ray powder diffraction (XRPD). According to the analysis of crystals by DSC, TG and XRPD, it concludes that CPFX crystals produced in cooling or dilution crystallization experiment should have the same crystal structure. Using the XRPD data, the unit cell parameters were calculated by software TREOR90. Systematic absence and statistics of reflexion indicate that CPFX crystals in this work have a high possibility of being the space group P2_1/c. The crystal habit transition has been observed in the salting-out crystallization when 0.2 M KCl solution works as precipitant.
机译:由水溶液通过各种方法制备具有两种不同习惯(例如针状和板状)的环丙沙星盐酸盐一水合物(CPFX)的晶体。这些晶体通过各种方法鉴定,例如扫描电子显微镜(SEM),差示扫描量热法(DSC),热重法(TG)和X射线粉末衍射(XRPD)。通过DSC,TG和XRPD对晶体的分析,可以得出结论,在冷却或稀释结晶实验中产生的CPFX晶体应具有相同的晶体结构。使用XRPD数据,通过软件TREOR90计算晶胞参数。系统性缺乏和反射统计表明,这项工作中的CPFX晶体很有可能成为空间群P2_1 / c。当0.2 M KCl溶液用作沉淀剂时,在盐析结晶中观察到晶体的惯性转变。

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