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Yang W, Qiu QM, Zhou LL, Jin QH, Zhang CL. An ortho-rhom-bic polymorph of pyrazino-[2,3-f][1,10]phenanthroline-2,3-dicarbonitrile. Acta Crystallogr Sect E Struct Rep Online. 2011 Dec 01;67(Pt 12):o3250–1. PMID: 22199760; PMCID: PMC3238907. |