A new crystal form of fatty acids
A new crystal form of fatty acids
复制标题
脂肪酸的新晶型
DOI：
10.1107/s0365110x63002425
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发表时间：
1963
期刊：
影响因子：
--
通讯作者：
J. Nielsen
中科院分区：
文献类型：
--
作者：
R. Holland;J. Nielsen
对十六烷酸、十八烷酸和二十二烷酸单晶的红外光谱进行了研究，为新晶型的存在提供了证据。本文将新形式十六烷酸的红外光谱与A-、B-和C-形式的光谱进行了比较。一些结论的结构的新形式presented.Introduction的脂肪酸结晶在各种形式。因此，已知几种具有偶数个碳原子的正羧酸有两种三斜晶型和两种单斜晶型（yon Sydow，1956 a）。在最近对脂肪酸单晶的红外光谱的研究中，我们获得了十六烷酸、十八烷酸和二十二烷酸的新晶体形式存在的证据。关于十八烷酸的详细证据已经提出（Holland & Nielsen，1962 b）。本文将介绍新形式十六烷酸的红外光谱，并与以前已知的A-、B-和C-形式的光谱进行比较。人们希望，新的晶体形式的存在可能很快被证实的X射线衍射研究，它的结构可能会被详细确定。
An investigation of the infrared spectra of single crystals of hexadecanoic, octadecanoic and docosanoic acids has provided evidence for the existence of a new crystal form. In the present paper the infrared spectrum of the new form of hexadecanoic acid is compared with the spectra of the A-, B-and C-forms. Some conclusions about the structure of the new form are presented.Introduction The fatty acids crystallize in a variety of forms. Thus, two triclinic and two monoclinic forms are known for several normal carboxylic acids with an even number of carbon atoms (yon Sydow, 1956a). In a recent investigation of the infrared spectra of single crystals of fatty acids we have obtained evidence for the existence of a new crystal form of hexadecanoic, oetadecanoic and docosanoic acids. The evidence has been presented in detail for octadecanoic acid (Holland & Nielsen, 1962b). In the present paper the infrared spectrum of the new form of hexadecanoic acid will be presented and compared with the spectra of the previously known A-, B-, and C-forms. It is hoped that the existence of the new crystal form may soon be confirmed by X-ray diffraction studies and that its structure may be determined in detail.