The crystal structure of diazomethyl β-d-galactopyranosyl ketone

Abstract The title compound (C 8 H 12 N 2 O 6 ) crystallizes in the orthorhombic space group P 2 1 2 1 2 1 ( Z = 4), with a = 4.871(1), b = 11.136(2), c = 18.301(2) A. The structure was solved by the multi-solution techique and refined by full-matrix least-squares to a final R -index of 0.042. The compound adopts the 4 C 1 ( d ) conformation. Bond lengths in the diazoacetyl group are consistent with the presence of a zwitterion.