catena-Poly[[tri­aqua­magnesium]-μ₂-malonato]

In the title compound, [Mg(C₃H₂O₄)(H₂O)₃]_n, the metal atom is in an octa­hedral environment. The octa­hedra are connected by malonate anions, forming chains along the c-axis direction. O—H...O hydrogen bonds link these chains into a three-dimensional network.

Bis(acetato-κO)bis­(thio­urea-κS)cobalt(II)

The title compound, [Co(CH₃COO)₂(CH₄N₂S)₂], is isotypic with the corresponding Zn^II complex. The metal atom is in a distorted tetra­hedral coordination environment with the two S atoms from two thio­urea ligands and two O atoms from two acetate anions as the coordinating atoms. All H atoms of the thio­urea ligands are involved in N—H...O and N—H...S hydrogen bonds, leading to a three-dimensional network.