The crystal structures of 3,6-dipyridin-3-yl-(1,2,4,5)-tetrazine, 3,6-dipyridin-4-yl-(1,2,4,5)-tetrazine and 3,6-dipyrazin-2-yl-(1,2,4,5)-tetrazine are reported. The packing arrangements of these three compounds containing 1,2,4,5-tetrazine rings are examined. The 1,2,4,5-tetrazine rings are electron deficient with respect to phenyl rings and the effect this has upon the observed packing motifs is discussed.
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Oxtoby et al. (2003) studied this question.
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