作者:JOHN IBALL
DOI:10.1038/159095a0
日期:1947.1
VERY few soaps or other similar substances have been examined by means of the X-ray single-crystal technique because of the difficulty of obtaining crystals which are large enough, and particularly crystals which are thick enough. Consequently, there are few data on the unit cell dimensions. Copper butyrate, however, when crystallized by allowing an acetone solution to evaporate at room temperature, gives unusually large and comparatively thick crystals in the form of six-sided plates frequently twinned on the large face. They are of a deep green colour, and on exposure to the air for a day or so the faces become dull, the crystals ultimately disintegrating.
由于难以获得足够大的晶体,特别是厚度足够大的晶体,很少有人用 X 射线单晶技术来研究肥皂或其他类似物质。因此,有关单胞尺寸的数据很少。然而,当丁酸铜在室温下通过让丙酮溶液蒸发而结晶时,会产生异常大且相对较厚的晶体,呈六面板状,经常在大面孪生。它们呈深绿色,暴露在空气中一天左右,表面会变得暗淡无光,晶体最终会解体。