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Abstract:

Dodecylnicotinate bis-adducts of binuclear copper carboxylates, of the general formula Cu2(O2CCn-1H2n-1)4(C 5H4NCOOC12H25)2, were synthesized for n = 10, 12, 14, 16, 18 and 20, and their crystal structure, thermal behavior and magnetic properties studied. The molecular structure of the decyl derivative has been determined from single-crystal X-ray diffraction data. The dimer is centrosymmetric with the CuII ions in a square-pyramidal coordination with four O-alkyl O atoms [average d(Cu - O) 1.960 (6) Å] in the basal plane and the nicotine N atom at apical positions [d(Cu - N) 2.183 (3) Å]. The copper ions, 2.615 (1) Å apart, are bridged by four O-alkyl carboxylate groups. Both the n = 20 and n = 18 homologues exhibit lamellar phases, which can be related to the supramolecular arrangement found in the n = 10 derivative. The magnetic behavior of the decyl and octadecyl dimers was studied in the 2-300 K temperature range. They exhibit a strong intramolecular antiferromagnetic interaction (Cu-Cu superexchange coupling constant J = -347 cm-1 for the decyl derivative), which can be attributed to a large overlap of the metal 3d orbitals and the oxygen lone pair orbitals of the linking carboxylate groups.

Registro:

Documento: Artículo
Título:Synthesis, structure and magnetic properties of tetrakis-μ-carboxylato-bis(dodecylnicotinato)dicopper(II) complexes; crystal and molecular structure of the decyl carboxylate derivative
Autor:Rusjan, M.; Chaia, Z.; Piro, O.E.; Guillon, D.; Cukiernik, F.D.
Filiación:INQUIMAE, Depto. de Quim. Inorgánica, Ciudad Universitaria, 1428 Buenos Aires, Argentina
Instituto de Ciencias, Univ. Nacional de General Sarmiento, Roca 850, 1663 San Miguel, Buenos Aires, Argentina
Departamento de Física, Facultad de Ciencias Exactas, IFLP (CONICET), CC 67, 1900 La Plata, Argentina
Inst. Phys. Chim. Mat. de Strasbourg, Grp. des Matériaux Organiques, 23 rue du Loess, 67037 Strasbourg CEDEX, France
Año:2000
Volumen:56
Número:4
Página de inicio:666
Página de fin:672
DOI: http://dx.doi.org/10.1107/S0108768100002056
Título revista:Acta Crystallographica Section B: Structural Science
Título revista abreviado:Acta Crystallogr. Sect. B Struct. Sci.
ISSN:01087681
CODEN:ASBSD
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_01087681_v56_n4_p666_Rusjan

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Citas:

---------- APA ----------
Rusjan, M., Chaia, Z., Piro, O.E., Guillon, D. & Cukiernik, F.D. (2000) . Synthesis, structure and magnetic properties of tetrakis-μ-carboxylato-bis(dodecylnicotinato)dicopper(II) complexes; crystal and molecular structure of the decyl carboxylate derivative. Acta Crystallographica Section B: Structural Science, 56(4), 666-672.
http://dx.doi.org/10.1107/S0108768100002056
---------- CHICAGO ----------
Rusjan, M., Chaia, Z., Piro, O.E., Guillon, D., Cukiernik, F.D. "Synthesis, structure and magnetic properties of tetrakis-μ-carboxylato-bis(dodecylnicotinato)dicopper(II) complexes; crystal and molecular structure of the decyl carboxylate derivative" . Acta Crystallographica Section B: Structural Science 56, no. 4 (2000) : 666-672.
http://dx.doi.org/10.1107/S0108768100002056
---------- MLA ----------
Rusjan, M., Chaia, Z., Piro, O.E., Guillon, D., Cukiernik, F.D. "Synthesis, structure and magnetic properties of tetrakis-μ-carboxylato-bis(dodecylnicotinato)dicopper(II) complexes; crystal and molecular structure of the decyl carboxylate derivative" . Acta Crystallographica Section B: Structural Science, vol. 56, no. 4, 2000, pp. 666-672.
http://dx.doi.org/10.1107/S0108768100002056
---------- VANCOUVER ----------
Rusjan, M., Chaia, Z., Piro, O.E., Guillon, D., Cukiernik, F.D. Synthesis, structure and magnetic properties of tetrakis-μ-carboxylato-bis(dodecylnicotinato)dicopper(II) complexes; crystal and molecular structure of the decyl carboxylate derivative. Acta Crystallogr. Sect. B Struct. Sci. 2000;56(4):666-672.
http://dx.doi.org/10.1107/S0108768100002056