摘要
The title compound [C3H3N3O3·2H2O] was synthesized by the reaction of urea with hydrogen peroxide, and characterized by elemental analysis, infrared spectra and nuclear magnetic resonance. The crystal belongs to monoclinic system,space group C2/c, with a=12. 538(3)i, b=6. 685(1),c=8.807 (3) , β= 116.11(2)°;V=662. 9(4), Z=4, Mr=165.11, Dc=1.65g/cm3, (MOKα)=0. 71069,μ=1. 47 cm-1, F(000) = 344,final R=0. 046 and Rω=0.061 for 493 observable reflections with I>3σ(I). All atoms lie in plane giving the molecule a planar configuration. The bond length of C-O is 1.214(3), C-N is 1.366(3). Every two cyan-uric molecules in the cell are connected by two intermolecular hydrogen bonds N-H…O, with N…O distance of 2.763 , N-H…O angle of 180.0°.
