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The title compound, [Co(C10H8N2)3]2[V4O12]·11H2O, is com­posed of two symmetry-related cations containing octa­hedrally coordinated CoII ions, a centrosymmetric [V4O12]4- anion with an eight-membered ring structure made up of four VO4 tetra­hedra, and 11 solvent water mol­ecules. The CoII cations and vanadate anions are isolated and build cation and anion layers, respectively. In addition, the title compound exhibits a three-dimensional network through intra- and inter­molecular hydrogen-bond inter­actions between water mol­ecules and O atoms of the anions, and the crystal structure is stabilized mainly by hydrogen bonds.

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The title compound, (C6H9N2S)[ZnCl3{SC(NH2)2}], exists as a zincate where the zinc(II) centre is coordinated by three chloride ligands and a thio­urea ligand to form the anion. The organic cation adopts the protonated 4,6-dimethyl-2-sulfanyl­idenepyrimidin-1-ium (L) form of 4,6-dimethyl­pyrimidine-2(1H)-thione. Two short N—H...Cl hydrogen bonds involving the pyrimidine H atoms and the [ZnCl3L] anion form a crystallographically centrosymmetric dimeric unit consisting of two anions and two cations. The packing structure is completed by longer-range hydrogen bonds donated by the thio­urea NH2 groups to chloride ligand hydrogen-bond acceptors.

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