Crystal structure of the growth inhibitor, ‘maleic hydrazide’(1,2-dihydropyridazine-3,6-dione)

Abstract

The crystal structure of the title compound (I) has been determined by symbolic-addition and rotation-function procedures and refined by full-matrix least-squares methods to R 0.063 for 568 observed reflections. Crystals are triclinic, space group P, with Z= 2 in a cell of dimensions a= 5.83(2), b= 5.78(2), c= 7.31(2)Å, α= 79.0(3), β= 99.5(3)°, γ= 107.2(3)°. Analysis of the molecular structure suggests that maleic hydrazide could act as a pyrimidine or a purine analogue.