RT Journal Article
T1 Electrochemical synthesis and structural characterization of Co(II), Ni(II) and Cu(II) complexes of N,N-bis(4,5-dimethyl-2-hydroxybenzyl)- N-(2-pyridylmethyl)amine
A1 Labisbal Viqueira, María Elena
A1 Rodríguez Silva, Laura
A1 Souto, Óscar
A1 Sousa Pedrares, Antonio
A1 García Vázquez, José Arturo
A1 Romero, Jaime
A1 Sousa, Antonio
A1 Yañez, Matilde
A1 Orallo, Francisco
A1 Real, José A.
AB The electrochemical oxidation of anodic metal (cobalt, nickel or copper) in a cell containing an acetonitrile solution of the ligand N,N-bis(4,5-dimethyl-2-hydroxybenzyl)-N-(2-pyridylmethyl)amine (H2L) affords complexes [Co2L2]·H2O (1), [Ni3L3] (2) and [Cu2L2] 3H2O (4). On using nickel as the anode and the addition to the solution electrolytic phase of the amount of water necessary to saturate the solution, the electrolytic process gave rise to the new compound [Ni2L2(H2O)1.5]·CH3CN (3). Compounds 1 and 4 are dimeric and the metal atoms are pentacoordinated. Compound 3 also consists of dimeric neutral molecules with the nickel atoms in both penta- and hexacoordinated environments. The crystal structure of 2 shows the presence of a trimeric compound in which the nickel atoms are hexacoordinated. Electronic, IR and FAB spectra of the complexes are discussed and related to the structural information. The magnetic behavior of 1–4 denotes the occurrence of intramolecular antiferromagnetic interactions. The values obtained for the coupling constant J are −4.2 cm−1, −5.3 cm−1, −30 cm−1 and −4.7 cm−1 for 1, 2, 3 and 4, respectively. These values are in full agreement with the structural characteristics of the compounds. The catalytic activity of the complexes towards the decomposition of hydrogen peroxide (catalase activity) was also studied.
PB Royal Society of Chemistry
SN 1477-9226
YR 2009
FD 2009-08-24
LK https://hdl.handle.net/10347/46119
UL https://hdl.handle.net/10347/46119
LA eng
NO Labisbal, E., Rodríguez, L., Souto, O., Sousa-Pedrares, A., García-Vázquez, J. A., Romero, J., Sousa, A., Yáñez, M., Orallo, F., & Real, J. A. (2009). Electrochemical synthesis and structural characterization of Co(II), Ni(II) and Cu(II) complexes of N,N-bis(4,5-dimethyl-2-hydroxybenzyl)-N-(2-pyridylmethyl)amine. Dalton Transactions, 2009(40), 8644–8656. https://doi.org/10.1039/B907539A
NO This is an Accepted Manuscript of an article published by Royal Society of Chemistry in Dalton Transactions on 2009, available at: https://doi.org/10.1039/B907539A
NO This work was supported by the Ministerio de Ciencia y Tecnologia (Spain) (grants CTQ2006-05298 and CTQ 2007- 64727-FEDER), Ministerio de Sanidad y Consumo (Spain; FISS PI061537) and by the Xunta de Galicia (Spain) (grants PGIDIT07PXIB-203038PR and PGIDIT05BTF20302PR).
DS Minerva
RD 23 may 2026