
%0 Journal Article
%A Durie, RA 
%A Shannon, JS 
%T Chemistry of polynuclear compounds. III. The structures and absorption spectra of 1,1'-Dianthrimide and indanthrone
%J Australian Journal of Chemistry
%D 1958/06/01
%V 11
%N 2
%P 189-199
%K 
%R https://doi.org/10.1071/CH9580189
%U https://www.publish.csiro.au/paper/CH9580189 
%X In an investigation into the coking mechanism of coal, polynuclear quinones have been adopted as models. The vibrational and electronic absorption spectra of indanthrone (I), 1,1?-dianthrimide (II), and 1,2,2',1'-anthraquinoneazine (III) are presented and discussed. The absorption spectra of I and II, together with other available evidence, favour the tetraketo form rather than the enol form as recently proposed by Wyman (1956) for structure I. 
