Poirot, Alexandre; Saffon-Merceron, Nathalie; Leygue, Nadine; Benoist, Eric; Fery-Forgues, Suzanne published an article in 2021. The article was titled 《Crystal structure of methyl 1,3-benzoxazole-2-carboxylate》, and you may find the article in Acta Crystallographica, Section E: Crystallographic Communications.Product Details of 5781-53-3 The information in the text is summarized as follows:
The title compound, C9H7NO3, crystallizes in the monoclinic (P21) space group. In the crystal, the almost planar mols. display a flattened herringbone arrangement. Stacking mols. are slipped in the lengthwise and widthwise directions and are linked by π interactions [d(Cg…Cg = 3.6640 (11)) Å]. The structure is characterized by strong C-H…N and weak C-H…O hydrogen bonds, and further stabilized by C-O…π interactions. The experimental process involved the reaction of Methyl 2-chloro-2-oxoacetate(cas: 5781-53-3Product Details of 5781-53-3)
Methyl 2-chloro-2-oxoacetate(cas: 5781-53-3) belongs to acyl chlorides. Lacking the ability to form hydrogen bonds, acyl chlorides have lower boiling and melting points than similar carboxylic acids. For example, acetic acid boils at 118 °C, whereas acetyl chloride boils at 51 °C. Like most carbonyl compounds, infrared spectroscopy reveals a band near 1750 cm−1.Product Details of 5781-53-3
Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics