STRUCTURE OF THE 4-OXO-2-BUTENOIC ACID ALKYL ESTER MOIETY .2. STRUCTURE OF DIMETHYL 4,4'-(METHYLHYDRAZO)BIS(4-OXO-2-BUTENOATE)

Dimethyl N-methyl-4,4'-dioxo-4,4'-hydrazo-2-butenoate, C11H14N2O6, M(r) = 270.24, triclinic, P1BAR, a = 4.604 (1), b = 8.543 (1), c = 16.940 (1) angstrom, alpha = 85.60 (1), beta = 89.21 (1), gamma = 85.97 (1)-degrees, V = 662.7 angstrom-3, Z = 2, D(x) = 1.354 Mg m-3, lambda(Cu K-alpha) = 1.54178 angstrom, mu = 0.91 mm-1, F(000) = 284, R = 0.060 for 2276 reflections. The molecules in the crystal form chains by means of N-H...O hydrogen bonds [N...O distance 2.794 (2) angstrom] running in the [100] direction. The configurations at the C=C double bonds are trans and adjacent carbonyl groups are syn oriented towards the double bond. The molecule is twisted by -83.3 (2)-degrees at the central hydrazine link.