Liquid-crystalline materials based on rhodium carboxylate coordination polymers: Synthesis, characterization and mesomorphic properties of tetra(alkoxybenzoato)dirhodium(II) complexes and their pyrazine adducts

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Tetra(alkoxybenzoato)dirhodium(II) complexes of the formula Rh2(x,y,z-BmOCn)4 (where B is the benzoate group; m is the number of alkoxy chains on the aromatic ring; x, y, and z are their positions of anchoring; and n is the number of carbon atoms in each alkoxy chain) and the corresponding pyrazine...

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Autor principal: Rusjan, M.
Otros Autores: Donnio, B., Guillon, D., Cukiernik, F.D
Formato: Capítulo de libro
Lenguaje:Inglés
Publicado: 2002
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100 1 |a Rusjan, M. 
245 1 0 |a Liquid-crystalline materials based on rhodium carboxylate coordination polymers: Synthesis, characterization and mesomorphic properties of tetra(alkoxybenzoato)dirhodium(II) complexes and their pyrazine adducts 
260 |c 2002 
270 1 0 |m Cukiernik, F.D.; Departamento de Quimica Inorganica, Facultad de Cie. Exact. y Naturales, Universidad de Buenos Aires, Ciudad de Universitaria, Nunez (C1428 EHA) Capital Federal, Argentina; email: fabioc@qi.fcen.uba.ar 
506 |2 openaire  |e Política editorial 
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520 3 |a Tetra(alkoxybenzoato)dirhodium(II) complexes of the formula Rh2(x,y,z-BmOCn)4 (where B is the benzoate group; m is the number of alkoxy chains on the aromatic ring; x, y, and z are their positions of anchoring; and n is the number of carbon atoms in each alkoxy chain) and the corresponding pyrazine adducts have been synthesized and characterized. The pyrazine adducts were prepared to have a polymeric structure via connected metallic centers. The complexes synthesized are Rh2(3,4,5-B3OCn)4 for n = 8, 10, 14, and 18; Rh2(3,4-B2OCn)4 for n = 9, 14, and 18; and Rh2(3,5-B2OCn)4 for n = 9 and 18, as well as the corresponding pyrazine adducts [Rh2(3,4,5-B3OCn)4pz]x for n = 10, 14, and 18; [Rh2(3,4-B2OCn)4pz]x for n = 14 and 18; and [Rh2(3,5-B2OCn)4pz]x for n = 9 and 18. Their liquid-crystalline (LC) properties have been analyzed. Most of them exhibit LC columnar and cubic mesophases with melting transition temperatures close to or even below room temperature. The mesomorphic character of the pyrazinic compounds, compared to the nonmesomorphic aliphatic carboxylate analogues, can be interpreted in terms of the ability of the equatorial ligands to fill the interdimeric space efficiently. Some internal characteristics about the arrangement of the molecules inside the columns are discussed.  |l eng 
593 |a INQUIMAE, Dept. de Química Inorgánica, Analítica y Química Física, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Pabellón II, Ciudad Universitaria, Núnez, Argentina 
593 |a Institut de Physique et Chimie des Matériaux de Strasbourg, UMR 7504 (CNRS-ULP), Groupe des Matériaux Organiques, 23 rue du Loess, 67037 Strasbourg Cedex, France 
593 |a Instituto de Ciencias, Universidad Nacional de General Sarmiento, Roca 850, San Miguel (1663), Provincia de Buenos Aires, Argentina 
690 1 0 |a CARBOXYLIC ACID DERIVATIVE 
690 1 0 |a PYRAZINE DERIVATIVE 
690 1 0 |a RHODIUM COMPLEX 
690 1 0 |a TETRA(BENZOATO)DIRHODIUM COMPLEX 
690 1 0 |a UNCLASSIFIED DRUG 
690 1 0 |a ARTICLE 
690 1 0 |a COMPLEX FORMATION 
690 1 0 |a CRYSTAL STRUCTURE 
690 1 0 |a LIQUID CRYSTAL 
690 1 0 |a MELTING POINT 
690 1 0 |a STRUCTURE ANALYSIS 
690 1 0 |a SYNTHESIS 
690 1 0 |a TEMPERATURE DEPENDENCE 
700 1 |a Donnio, B. 
700 1 |a Guillon, D. 
700 1 |a Cukiernik, F.D. 
773 0 |d 2002  |g v. 14  |h pp. 1564-1575  |k n. 4  |p Chem. Mater.  |x 08974756  |w (AR-BaUEN)CENRE-5532  |t Chemistry of Materials 
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856 4 0 |u https://doi.org/10.1021/cm0109995  |y DOI 
856 4 0 |u https://hdl.handle.net/20.500.12110/paper_08974756_v14_n4_p1564_Rusjan  |y Handle 
856 4 0 |u https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_08974756_v14_n4_p1564_Rusjan  |y Registro en la Biblioteca Digital 
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