
%0 Journal Article
%A Becker, HD 
%A Skelton, BW 
%A Sorensen, H 
%A White, AH 
%T Photochemical <I>cis-trans</I> Isomerization of 2-Substituted 9-(2-Nitroethenyl)anthracenes. X-Ray Structure Analyses of (E)- and (Z)-9-(2-Nitro-2-phenylethenyl)anthracene
%J Australian Journal of Chemistry
%D 1989/04/01
%V 42
%N 4
%P 593-601
%K 
%R https://doi.org/10.1071/CH9890593
%U https://www.publish.csiro.au/paper/CH9890593 
%X (E)-9-(2-Nitropropeny1)anthracene and (E)-9-(2-nitro-2-phenylethenyl)anthracene have been prepared by piperidine-catalysed condensation of 9-anthraldehyde with nitroethane and nitro(phenyl)methane, respectively. The corresponding (Z)-compounds were obtained by photochemical isomerization, quantum yields of geometrical isomerlzation being measured in cyclohexane, benzene, dichloromethane and ethanol. In virtually all solvents the (Z)-isomers are favoured at the photostationary state. The structures of (E)- and (2)-942- nitro-2-phenylethenyl)anthracene have been established by single-crystal X-ray diffraction studies. 
