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Artículo

Di-μ-acetato-bis-[(acetato-κ2 O,O')bis- (isonicotinamide-κN)copper(II)]

Perec, MireilleIcon ; Baggio, Ricardo Fortunato
Fecha de publicación: 03/2010
Editorial: Wiley Blackwell Publishing, Inc
Revista: Acta Crystallographica Section E
ISSN: 1600-5368
Idioma: Inglés
Tipo de recurso: Artículo publicado
Clasificación temática:
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Resumen

The title centrosymmetric bimetallic complex, [Cu2(C 2H3O2)4(C6H 6N2O)4], is composed of two copper(II) cations, four acetate anions and four isonicotinamide (INA) ligands. The asymmetric unit contains one copper cation to which two acetate units bind asymmetrically; one of the Cu - O distances is rather long [2.740 (2) Å], almost at the limit of coordination. These Cu - O bonds define an equatorial plane to which the Cu - N bonds to the INA ligands are almost perpendicular, the Cu - N vectors subtending angles of 2.4 (1) and 2.3 (1)° to the normal to the plane. The metal coordination geometry can be described as a slightly distorted trigonal bipyramid if the extremely weak Cu - O bond is disregarded, or as a highly distorted square bipyramid if it is not. The double acetate bridge between the copper ions is not coplanar with the CuO4 equatorial planes, the dihedral angle between the (O - C - O)2 and O - Cu - O groups being 34.3 (1)°, resulting in a sofa-like conformation for the 8-member bridging loop. In the crystal, N - H⋯O hydrogen bonds occur, some of which generate a head-to tail-linkage between INA units, giving raise to chains along [101]; the remaining ones make inter-chain contacts, defining a three-dimensional network. There are in addition a number of C - H⋯O bonds involving aromatic H atoms. Probably due to steric hindrance, the aromatic rings are not involved in significant π⋯π inter-actions.
Palabras clave: Data-To-Parameter Ratio = 15.3 , Mean Σ(C-C) = 0.004 Å , R Factor = 0.039 , Single-Crystal X-Ray Study , T = 294 K , Wr Factor = 0.099
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info:eu-repo/semantics/openAccess Excepto donde se diga explícitamente, este item se publica bajo la siguiente descripción: Creative Commons Attribution 2.5 Unported (CC BY 2.5)
Identificadores
URI: http://hdl.handle.net/11336/71893
DOI: https://dx.doi.org/10.1107/S1600536810004393
URL: http://scripts.iucr.org/cgi-bin/paper?S1600536810004393
Colecciones
Articulos(INQUIMAE)
Articulos de INST.D/QUIM FIS D/L MATERIALES MEDIOAMB Y ENERGIA
Citación
Perec, Mireille; Baggio, Ricardo Fortunato; Di-μ-acetato-bis-[(acetato-κ2 O,O')bis- (isonicotinamide-κN)copper(II)]; Wiley Blackwell Publishing, Inc; Acta Crystallographica Section E; 66; 3; 3-2010; 275-276
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