Artículo
Abstract:
Synthesis, characterization and mesomorphic properties of tetra(alkoxy benzoate)diosminum(III) of the formula Os2(k,l,m-BgOCn)4 (where B is the benzoate group; g is the number of alkoxy chains on the aromatic ring; k, l and m are their positions of attachments; and n is the number of carbon atoms in each alkoxy chain) and their corresponding pyrazine adducts have been carried out. The complexes synthesized are Os2 (3,4,5-B3OCn)4 for n = 2, 10, 16 and 20; Os2(3,4-B2OCn)4 for n = 2, 9, and 14; Os2(3,5-B2OCn)4 for n = 2, 10, 16 and 20; as well as the corresponding adducts[Os2(3,4,5-B3OCn)4px]x for n = 2, 10, 16 and 20; Os2(3,4-B2OCn)4 for n = 2, 9 and 14; Os2(3,5-B2OCn)4 for n = 14, 16 and 19. Full characterization of the compounds were carried out using elemental analyses, 1H NMR and IR. A single crystal X-ray diffraction studies confirmed that the pyrazine adducts prepared via connected metallic centers have a polymeric structure. Diffrential scanning calorimetry (DSC), optical microscopy and XRD studies revealed the liquid-crystalline (LC) properties of most of them as cubic mesophases with melting transition temperatures close or below room temperatures. The mesomorphic character of the pyrazine compounds, compared to the non-mesomorphic aliphatic carboxylate analogues, can be interpreted in terms of the ability of the equatorial ligands to fill the interdimeric space efficiently. Copyright © Taylor & Francis Group, LLC.
Registro:
| Documento: | Artículo |
| Título: | Studies of mesomorphic properties of a series of bimetallic Os (III,III) benzoates and their polymeric axial pyrazine adducts |
| Autor: | Fabiyi, F.A.S.; Lopez, M.L. |
| Filiación: | INQUIMAE, Departamento de Quimica Inorganica, Analytica Y Quimica Fisica, Universidad de Buenos Aires, Argentina Institut de Physique et Chimie des Materiaux de Strasbourg, Groupe des Materiaux Inorganiques, Strasbourg Cedex INQUIMAE, Departamento de Quimica Inorganica, Analytica Y Quimica Fisica, Universidad de Buenos Aires, Buenos Aires, Argentina |
| Palabras clave: | Equatorial ligands; Interdimeric space; Mesomorphic; Non-mesomorphic; Osmium carboxylates; Pyrazine adducts |
| Año: | 2008 |
| Volumen: | 38 |
| Número: | 10 |
| Página de inicio: | 758 |
| Página de fin: | 768 |
| DOI: | http://dx.doi.org/10.1080/15533170802525852 |
| Título revista: | Synthesis and Reactivity in Inorganic, Metal-Organic and Nano-Metal Chemistry |
| Título revista abreviado: | Synth. React. Inorg. Met-Org. Nano-Met. Chem. |
| ISSN: | 15533174 |
| Registro: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_15533174_v38_n10_p758_Fabiyi |
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Citas:
---------- APA ----------
Fabiyi, F.A.S. & Lopez, M.L. (2008) . Studies of mesomorphic properties of a series of bimetallic Os (III,III) benzoates and their polymeric axial pyrazine adducts. Synthesis and Reactivity in Inorganic, Metal-Organic and Nano-Metal Chemistry, 38(10), 758-768.http://dx.doi.org/10.1080/15533170802525852
---------- CHICAGO ----------
Fabiyi, F.A.S., Lopez, M.L. "Studies of mesomorphic properties of a series of bimetallic Os (III,III) benzoates and their polymeric axial pyrazine adducts" . Synthesis and Reactivity in Inorganic, Metal-Organic and Nano-Metal Chemistry 38, no. 10 (2008) : 758-768.http://dx.doi.org/10.1080/15533170802525852
---------- MLA ----------
Fabiyi, F.A.S., Lopez, M.L. "Studies of mesomorphic properties of a series of bimetallic Os (III,III) benzoates and their polymeric axial pyrazine adducts" . Synthesis and Reactivity in Inorganic, Metal-Organic and Nano-Metal Chemistry, vol. 38, no. 10, 2008, pp. 758-768.http://dx.doi.org/10.1080/15533170802525852
---------- VANCOUVER ----------
Fabiyi, F.A.S., Lopez, M.L. Studies of mesomorphic properties of a series of bimetallic Os (III,III) benzoates and their polymeric axial pyrazine adducts. Synth. React. Inorg. Met-Org. Nano-Met. Chem. 2008;38(10):758-768.http://dx.doi.org/10.1080/15533170802525852
