Synthesis and crystal structure of a heterobimetallic cadmium-sodium complex of 1,3,5-triazine-2,4,6-trione, [CdNa2(C3H2N3O3)4(H2O)8].

Heterobimetallic crystals of a cadmium-sodium complex of 1,3,5-triazine-2,4,6-trione, namely, µ-aqua-1:2κ2 O:O-hepta-aqua-1κ3 O,2κ2 O,3κ2 O-bis-(µ-4,6-dioxo-1,4,5,6-tetra-hydro-1,3,5-triazin-2-olato)-1:2κ2 O 2:N 1;2:3κ2 N 1:O 2-bis-(4,6-dioxo-1,4,5,6-tetra-hydro-1,3,5-triazin-2-olato)-1κO 2,3κO 2-2-cadmium-1,3-disodium, [CdNa2(C3H2N3O3)4(H2O)8], were grown by the single gel diffusion technique. The asymmetric unit of the title compound comprises four 1,3,5-triazine-2,4,6-trione ligands, two sodium atoms and one cadmium atom. Of the four ligands, two are monodentately coordinated to two Na atoms. The third ligand is coordinated bidentately to one Na and the Cd atom and the fourth is also coordinated bidentately to the Cd atom and the other Na atom. All the metal atoms are six-coordinate with a distorted octa-hedral geometry. The water mol-ecules bridge the Na atoms, constructing coordination polymer chains along the a axis and hence are linked by two Cd and one Na coordinations through the cyanuric acid ligands present in the coordination polymer chains, generating a two-dimensional coordination polymer in the (110) plane. The polymer formation is further assisted by means of many inter-molecular and intra-molecular N-H⋯O, O-H⋯O and O-H⋯N hydrogen bonds between the water mol-ecules and the ligands.

Spectral, thermal, structural, dielectric and microhardness studies of gel grown diaquasuccinatocadmium(II) hemihydrate.

Diaquasuccinatocadmium(II) hemihydrate (DSCH) single crystals were grown successfully by single gel diffusion technique at room temperature. Block shaped crystals of size 11 mm × 6 mm × 3 mm have been obtained in 24 days. The grown crystals were colorless and transparent. The crystalline nature and reflection planes of the sample were confirmed by the powder X-ray diffraction technique. The crystal structure of the DSCH crystal was determined by single crystal X-ray diffraction technique. According to microanalytical results the formula of the crystal is [Cd(C(4)H(4)O(4))H(2)O](2)·0.5H(2)O. Fourier Transform Infrared (FT-IR) and Fourier Transform Raman (FT-Raman) studies were used to confirm the presence of various functional groups in the crystal. The thermal behavior of the crystal was studied by simultaneous TGA-DTA methods in nitrogen atmosphere. The mechanical strength of the grown crystal was estimated by Vickers microhardness test. The dielectric behavior of the sample was also studied.