Crystal structure of m-nitrobenzoic anhydride

Autor:	Izabela Król, Iwona Iwanicka, Marek L. Główka
Rok vydání:	1990
Předmět:	chemistry.chemical_classification Stacking Nitro compound General Chemistry Crystal structure Condensed Matter Physics Ring (chemistry) Crystal Crystallography chemistry Structural Biology X-ray crystallography Orthorhombic crystal system Symmetry (geometry) Spectroscopy
Zdroj:	Journal of Crystallographic and Spectroscopic Research. 20:519-523
ISSN:	1572-8854 0277-8068
DOI:	10.1007/bf01221891
Popis:	The title compound (C14H8N2O7,M r =306.2) crystallizes in the orthorhombic space group Pbca witha=6.962(1).b=24.688(1), andc=15.890(1)A,V=2731.0 A3,D x =1.489 g·cm−3 forZ=8,μ=0.98 mm−1,F(000)=1296,T=293 K. FinalR=0.053 for 1873 observed reflections. The structure was solved by direct methods. Approximately planar molecules lie perpendicular to the [100] direction and show partial stacking. The structure is the first example of a symmetric anhydride which does not retain the symmetry in the crystal state. The two independent nitro groups twist out of the ring planes by 10.5 and 14.8°, respectively.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::0394099a91162c139a52ce45bb4a2a3a https://doi.org/10.1007/bf01221891 Zobrazit plný text záznamu Full text from SpringerLink