Abstract

The complex (C6H6N3O4)2Hg crystallizes in space groupP¯1, witha=16.635(2),b=11.765(2)c=9.288(2),α=98.74(2),β=102.99(2),γ=108.13(1)°,V=1634.3(6) A3 andZ=4. The structure was solved by the heavy-atom method, and refined by full-matrix least squaresR andRw values of 0.051 and 0.044, respectively, for 3108 uniquc reflections. The Hg(II) atom displays a highly distorted tetrahedral coordination geometry. It is bonded to two nitrogens and two oxygens of the two modified uracil base ligands in an unequalcis-bidentate manner. The ligand exists in the triketo form. The crystal structure is stabilized by C-H⋯O interactions.

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