Abstract
In the crystal structure of the title compound, [HgBr2(C5H5N3O)2]n, the HgII cation is located on an inversion center and is coordinated by two N atoms from the pyrazine rings and four bridging Br− anions in a distorted octahedral geometry. The Br− anions bridge the HgII cations with significantly different Hg—Br bond distances of 2.4775 (8) and 3.1122 (8) Å, forming polymeric chains running along the a axis. Intermolecular N—H⋯O and N—H⋯N hydrogen bonds are effective in the stabilization of the crystal structure.
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