TY - JOUR
T1 - Preferential azido bridging regulating the structural aspects in cobalt(III) and copper(II)-Schiff base complexes
T2 - Syntheses, magnetostructural correlations and catalytic studies
AU - Ray, Aurkie
AU - Rosair, Georgina M.
AU - Pilet, Guillaume
AU - Dede, Bülent
AU - Gómez-García, Carlos J.
AU - Signorella, Sandra
AU - Bellú, Sebastián
AU - Mitra, Samiran
PY - 2011/9/1
Y1 - 2011/9/1
N2 - A tridentate NNO donor Schiff base ligand [(1Z,3E)-3-((pyridin-2-yl)methylimino)-1-phenylbut-1-en-1-ol = LH] in presence of azide ions coordinates with cobalt(II) and copper(II) ions giving rise to three new coordination complexes [Co2(L)2(µ1,1-N3)2(N3)2] (1), [Cu2(L)2(µ1,3-N3)]·ClO4 (2) and [(µ1,1-N3)2Cu5(µ-OL)2(µ1,1-N3)4(µ1,1,1-N3)2] n (3). The complexes have been characterized by elemental analysis, FT-IR, UV-Vis spectral studies, and single crystal X-ray diffraction studies. These complexes demonstrate that under different synthetic conditions the azide ions and the Schiff base ligand (LH) show different coordination modes with cobalt(II) and copper(II) ions, giving rise to unusual dinuclear and polynuclear species (1, 2 and 3) whose structural variations are discussed. Magneto-structural correlation for the very rare singly µ1,3-N3 bridged CuII-Schiff base dinuclear species (2) has been studied. In addition, the catalytic properties of 1 for alkene oxidation and the general catalase-like activity behavior of 2 have been discussed. © 2011 Elsevier B.V. All rights reserved.
AB - A tridentate NNO donor Schiff base ligand [(1Z,3E)-3-((pyridin-2-yl)methylimino)-1-phenylbut-1-en-1-ol = LH] in presence of azide ions coordinates with cobalt(II) and copper(II) ions giving rise to three new coordination complexes [Co2(L)2(µ1,1-N3)2(N3)2] (1), [Cu2(L)2(µ1,3-N3)]·ClO4 (2) and [(µ1,1-N3)2Cu5(µ-OL)2(µ1,1-N3)4(µ1,1,1-N3)2] n (3). The complexes have been characterized by elemental analysis, FT-IR, UV-Vis spectral studies, and single crystal X-ray diffraction studies. These complexes demonstrate that under different synthetic conditions the azide ions and the Schiff base ligand (LH) show different coordination modes with cobalt(II) and copper(II) ions, giving rise to unusual dinuclear and polynuclear species (1, 2 and 3) whose structural variations are discussed. Magneto-structural correlation for the very rare singly µ1,3-N3 bridged CuII-Schiff base dinuclear species (2) has been studied. In addition, the catalytic properties of 1 for alkene oxidation and the general catalase-like activity behavior of 2 have been discussed. © 2011 Elsevier B.V. All rights reserved.
KW - μ 1,1 -, μ 1,1,1 -, μ 1,3 -Azide
KW - Alkene oxidation
KW - Crystal structures
KW - M = CoIII, CuII
KW - Schiff base
KW - VTM
U2 - 10.1016/j.ica.2011.04.008
DO - 10.1016/j.ica.2011.04.008
M3 - Article
SN - 0020-1693
VL - 375
SP - 20
EP - 30
JO - Inorganica Chimica Acta
JF - Inorganica Chimica Acta
IS - 1
ER -