Dinuclear cobalt(II) complexes with double phosphate ester bridges and tetradentate ligands having anisole or quinoline appendages
| Autor: | Edamana Prasad, Babu Varghese, S. S. Anjana |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
010405 organic chemistry
Quinoline chemistry.chemical_element Crystal structure 010402 general chemistry Condensed Matter Physics Anisole 01 natural sciences Medicinal chemistry 0104 chemical sciences Inorganic Chemistry Metal Perchlorate chemistry.chemical_compound Aniline chemistry Octahedron visual_art Materials Chemistry visual_art.visual_art_medium Organic chemistry Physical and Theoretical Chemistry Cobalt |
| Zdroj: | Acta Crystallographica Section C Structural Chemistry. 73:492-497 |
| ISSN: | 2053-2296 |
| DOI: | 10.1107/s2053229617007355 |
| Popis: | Phosphate esters provide a rigid and stable polymeric backbone in nucleic acids. Metal complexes with phosphate ester groups have been synthesized as structural and spectroscopic models of phosphate-containing enzymes. Dinucleating ligands are used extensively to synthesize model complexes since they provide the support required to stabilize such complexes. The crystal structures of two dinuclear CoII complexes, namely bis(μ-diphenyl phosphato-κ2 O:O′)bis({2-methoxy-N,N-bis[(pyridin-2-yl)methyl]aniline-κ4 N,N′,N′′,O}cobalt(II)) bis(perchlorate), [Co(C12H10O4P)2(C19H19N3O)2](ClO4)2, and bis(μ-diphenyl phosphato-κ2 O:O′)bis({N,N-bis[(pyridin-2-yl)methyl]quinolin-8-amine-κ4 N,N′,N′′,O}cobalt(II)) bis(perchlorate), [Co(C12H10O4P)2(C21H18N4)2](ClO4)2, with tetradentate 2-methoxy-N,N-bis[(pyridin-2-yl)methyl]aniline (L 1) and N,N-bis[(pyridin-2-yl)methyl]quinolin-8-amine (L 2) ligands are reported. The complexes have similar structures, with distorted octahedral geometries around the metal centres. Both are centrosymmetric (Z′ = 0.5), with the CoII centres doubly bridged by diphenyl phosphate ester groups. A number of aromatic–aromatic interactions are present and differ between the two complexes as the anisole group in L 1 is replaced by a quinoline group in L 2. A detailed study of these interactions is presented. |
| Databáze: | OpenAIRE |
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