Supramolecular stacking motifs in the solid state of amide and triazole derivatives of cellobiose

1-Acetamido-1-deoxy-(4-O-β-d-glucopyranosyl-β-d-glucopyranose) (5) and 1-deoxy-1-(4-phenyl-1,2,3-triazolyl)-(4-O-β-d-glucopyranosyl- β-d-glucopyranose) (7) were synthesised from 1-azido-1-deoxy-(4-O-β-d- glucopyranosyl-β-d-glucopyranose) (2) and crystallised as dihydrates. Crystal structural analysis of 5·2H₂O displayed an acetamide C(4) chain and stacked cellobiose residues. The structure of 7·2H ₂O featured π-π stacking and stacking of the cellobiose residues.