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The crystal structures of solid pyrrole, C4H5N, and 1,2,3-triazole, C2H3N3, are described. Pyrrole shows a N—H...π interaction between neighbouring molecules whereas 1,2,3-triazole is found to crystallize as a 1:1 molecular complex of its two possible tautomers, 1H-1,2,3-triazole and 2H-1,2,3-triazole, linked by an N—H...N hydrogen bond.

Supporting information

cif

Crystallographic Information File (CIF)
Contains datablocks manuscript, 1, 23

fcf

Structure factor file (CIF format)
Contains datablock 1

fcf

Structure factor file (CIF format)
Contains datablock 2097

CCDC references: 129405; 129406

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