title: A new complex of HgBr2 and pyrimidine-2-thione: (pyrimidine-2-thionato-kappaS)(pyrimidinium-2-thionato-kappaS)mercury(II) tetrabromomercury(II).
abstract: The title compound, [Hg(C(4)H(4)N(2)S)(C(4)H(3)N(2)S)](2)[HgBr(4)], consists of [Hg(pymt)(pymtH)](+) complex cations (pymtH is pyrimidine-2-thione) lying across twofold rotation axes in space group Fddd, with linearly coordinated mercury at an Hg-S distance of 2.357 (3) A, and [HgBr(4)](2-) anions lying at sites of 222 symmetry. The Hg atom is additionally coordinated by two N and two Br atoms, forming a 2+4 effective coordination sphere. The protonated ligand is connected via N-H.N hydrogen bonds to the neighbouring unprotonated ligand, thus forming infinite chains of cations.
authors.affiliation: Laboratory of General and Inorganic Chemistry, Department of Chemistry, Faculty of Science, University of Zagreb, Ul. kralja Zvonimira 8, 10000 Zagreb, Croatia. dubravaka@chem.pmf.hr
authors.forename: Dubravka
authors.initials: D
authors.lastname: Matković-Calogović
authors.forename: Draginja
authors.initials: D
authors.lastname: Mrvos-Sermek
authors.forename: Zora
authors.initials: Z
authors.lastname: Popović
authors.forename: Zeljka
authors.initials: Z
authors.lastname: Soldin