Accessibility navigation


Cu-II acetate complexes involving N,N,O donor Schiff base ligands: Mono-atomic oxygen bridged dimers and alternating chains of the dimers and Cu-2(OAc)(4)

Sarkar, B., Drew, M. G. B., Estrader, M., Diaz, C. and Ghosh, A. (2008) Cu-II acetate complexes involving N,N,O donor Schiff base ligands: Mono-atomic oxygen bridged dimers and alternating chains of the dimers and Cu-2(OAc)(4). Polyhedron, 27 (12). pp. 2625-2633. ISSN 0277-5387

Full text not archived in this repository.

It is advisable to refer to the publisher's version if you intend to cite from this work. See Guidance on citing.

To link to this item DOI: 10.1016/j.poly.2008.05.004

Abstract/Summary

Two tridentate N,N,O donor Schiff bases, HL1 (4-(2-ethylamino-ethylimino)-pentan-2-one) and HL2 (3-(2-amino-propylimino)-1-phenyl-butan-1-one) on reaction with Cu-II acetate in presence of triethyl amine yielded two basal-apical, mono-atomic acetate oxygen-bridging dimeric copper(II) complexes, [Cu2L21(OAc)(2)] (1), [Cu2L22(OAc)(2)] (2). Whereas two other similar tridentate ligands HL3 (4-(2-amino-propylimino)-pentane-2-one) and HL3 (3-(2-amino-ethylimino)-1-phenyl-butan-1-one) under the same conditions produced a mixture of the corresponding dinners and a one-dimensional alternating chain of the dimer and copper acetate moiety, [Cu4L23(OAc)(6)](n) (3) and [Cu4L24(OAc)(6)](n) (4), formed by a very rare mu(3) bridging mode of the acetate ion. All four complexes (1-4) have been characterized by X-ray crystallography. The isotropic Hamiltonian, H = -JS(1)S(2) has been used to interpret the magnetic data. Magnetic measurements of 1 and 2 in the temperature range 2-300 K reveal a very weak antiferromagnetic coupling for both complexes U = -0.56 and -1.19 cm(-1) for 1 and 2, respectively). (C) 2008 Elsevier Ltd. All rights reserved.

Item Type:Article
Refereed:Yes
Divisions:Faculty of Life Sciences > School of Chemistry, Food and Pharmacy > Department of Chemistry
ID Code:11599
Uncontrolled Keywords:copper, acetate bridge, Schiff base, X-ray structures, magnetic, properties, POLYNUCLEAR COPPER(II) COMPLEXES, TRINUCLEAR CU(II) COMPLEXES, TRANSITION-METAL COMPLEXES, HYDROGEN-BOND STRUCTURES, X-RAY STRUCTURE, MAGNETIC-PROPERTIES, CRYSTAL-STRUCTURE, NICKEL(II) COMPLEXES, MU(3)-OH, CORE, MAGNETOSTRUCTURAL CORRELATIONS

University Staff: Request a correction | Centaur Editors: Update this record

Page navigation