Crystal structure of bis[(S)-2-(2-hydroxybenzylamino)-4-methylpentanoato-κ2N,O1](1,10-phenanthroline-κ2N,N′)cadmium dihydrate
| Autor: | Md. Serajul Haque Faizi, Necmi Dege, James Pogrebetsky, Turganbay S. Iskenderov |
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| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: | |
| Zdroj: | Acta Crystallographica Section E: Crystallographic Communications, Vol 74, Iss 11, Pp 1565-1568 (2018) |
| Druh dokumentu: | article |
| ISSN: | 2056-9890 20569890 |
| DOI: | 10.1107/S2056989018013877 |
| Popis: | The asymmetric unit of the mononuclear mixed-ligand title complex, [Cd(C13H18NO3)2(C12H8N2)]·2H2O, contains two crystallographically independent molecules that differ insignificantly in their geometrical parameters. In both, the CdII cation lies on a twofold rotation axis and is coordinated in a distorted octahedral fashion to two monodeprotonated residues of the l-leucine-derived ligand (S)-2-(2-hydroxybenzylamino)-4-methylpentanoic acid (L), as well as to a 1,10-phenanthroline ligand in a κ2N,N′ mode. The former coordinate in an N,O-chelating mode, exhibiting a trans-N,N′ mutual disposition. The phenolic oxygen donor groups remain protonated and do not coordinate to the cation but take part in intra- and intermolecular hydrogen bonds. In the crystal, O—H...O hydrogen bonding results in the formation of a three-dimensional network structure. The contribution to the electron density of two disordered water molecules was removed with the SQUEEZE procedure in PLATON [Spek (2015). Acta Cryst. C71, 9–18]. The studied crystal was refined as a two-component inversion twin. The title complex was also characterized by IR and 1H NMR spectroscopic methods. |
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