The synthesis of some 2-cyano-4-nitrostilbenes is described and the influence of an ortho-cyano and a ortho-nitro group on the conformation of 2-cyano-4-nitro-, 2,4-dinitro-, 2,6-dinitro- and 2,4,6-trinitro-4′-methoxystilbene have been examined by X-ray crystallography.
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