Crystal structures of di-bromido-{
| Autor: | Ali Akbar, Khandar, Farhad Akbari, Afkhami, Harald, Krautscheid, Kenneth Aase, Kristoffersen, Zeliha, Atioğlu, Mehmet, Akkurt, Carl Henrik, Görbitz |
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| Rok vydání: | 2017 |
| Předmět: | |
| Zdroj: | Acta Crystallographica Section E: Crystallographic Communications |
| ISSN: | 2056-9890 |
| Popis: | The title compounds are cadmium bromide and cadmium iodide complexes of the ligand N′-(pyridin-2-ylmethylene)picolinohydrazide. In both compounds, the Cd2+ ion is ligated by one O atom and two N atoms of the tridentate ligand, and by two halide ions. Both have fivefold coordination spheres with a distorted square-pyramidal geometry. The title compounds, [CdBr2(C12H10N4O)]·CH3OH, (I), and [CdI2(C12H10N4O)], (II), are cadmium bromide and cadmium iodide complexes of the ligand (E)-N′-(pyridin-2-ylmethylene)picolinohydrazide. Complex (I) crystallizes as the methanol monosolvate. In both compounds, the Cd2+ cation is ligated by one O atom and two N atoms of the tridentate ligand, and by two bromide anions forming a Br2N2O pentacoordination sphere for (I), and by two iodide anions forming an I2N2O pentacoordination sphere for (II), both with a distorted square-pyramidal geometry. In the crystal of complex (I), molecules are linked by pairs of N—H⋯O and O—H⋯Br hydrogen bonds, involving the solvent molecule, forming dimeric units, which are linked by C—H⋯Br hydrogen bonds forming layers parallel to (101). In the crystal of complex (II), molecules are linked by N—H⋯I hydrogen bonds, forming chains propagating along [010]. In complex (II), measured at room temperature, the two iodide anions are each disordered over two sites; the refined occupancy ratio is 0.75 (2):0.25 (2). |
| Databáze: | OpenAIRE |
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