643741-00-8Relevant academic research and scientific papers
Anion-directed structural diversity in the complexes of Cd(II)-arylazoimidazole: Synthesis, spectral characterization and crystal structure
Chand,Ray,Mostafa,Lu, Tian-Huey,Falvello, Lawrence R.,Soler, Tatiana,Tomá, Milagres,Sinha
, p. 3161 - 3169 (2008/10/08)
Cadmium(II) complexes of 1-alkyl-2-(arylazo)imidazoles [RaaiR′ (where R = H (a), Me (b); R′ = Me (1/3/5/7), Et (2/4/6/8)] are described in this work. Three representative complexes of the series, [Cd(HaaiMe) 2Cl2] (3a), [Cd(HaaiEt)4](ClO4) 2 (6a) and [Cd(HaaiMe)4](NO3) 2·2H2O (7a), have been characterized by single crystal X-ray diffraction measurements. In these complexes, cadmium is seated at the center of a tetrahedron. In [Cd(HaaiMe)2Cl2] (3a), the neutral metallo-organic compound consists of a central cadmium atom surrounded by two HaaiMe ligands and two chlorides. In [Cd(HaaiEt)4] (ClO4)2 (6a), the cation consists of a central cadmium atom surrounded by four HaaiEt ligands. [Cd(HaaiMe)4] (NO 3)2·2H2O (7a) is a tetragonal channel structure. Nitrate and interstitial water molecules assemble into a square-grid supramolecule (ca. 7 × 7 A?) and each grid is interlocked by chains parallel to the Z-axis passing through the middle of the square arms to form a layer in the ac- (or bc-) plane with a brick-wall topology (dimension 11.2 × 7 A?).
