RESUMO
The first structurally characterized alkali metal phosphonate, the title compound, [K2(C6H6O3P)2(C3H7NO)(H2O)]n, has a complex structure, with layers parallel to the crystallographic bc plane consisting of two crystallographically independent K atoms sandwiched between the three types of ligands present in the structure, viz. water molecules, dimethylformamide molecules and two crystallographically independent phenylphosphonate ligands. Six O atoms coordinate to one K atom and seven to the other. The interlayer distance is 15.327 (4) A. The K-O distances are in the range 2.739 (2)-2.932 (2) A for the seven-coordinate K atom and 2.650 (2)-2.821 (2) A for the six-coordinate K atom.
RESUMO
The structure of the title compound, [PtCl(2)(C(5)H(5)N)(C(2)H(6)S)], consists of discrete molecules in which the Pt-atom coordination is slightly distorted square planar. The Cl atoms are trans to each other, with a Cl-Pt-Cl angle of 176.60 (7) degrees. The pyridine ligand is rotated 64.5 (2) degrees from the Pt square plane and one of the Pt-Cl bonds essentially bisects the C-S-C angle of the dimethyl sulfide ligand. In the crystal structure, there are extensive weak C-H...Cl interactions, the shortest of which connects molecules into centrosymmetric dimers. A comparison of the structural trans influence on Pt-S and Pt-N distances for PtS(CH(3))(2) and Pt(pyridine) fragments, respectively, in square-planar Pt(II) complexes is presented.