The lanthanum (III) complex [La(H2LA)(Cl)(3)] has been prepared by reaction of the preformed ligand H2LA with LaCl3. 7H(2)O or by template procedure. H2LA is the asymmetric [1 + 1] compartmental macrocycle containing an N3O2 Schiff base and an O2O4 crown-like site derived by the condensation of 3,3'-(3,6-dioxaoctane-1,8-diyldioxy)bis(2-hydroxybenzaldehyde) and 1,5-diamino-3-azamethylpentane. The X-ray structure of [La(H2LA)(Cl)(3)] shows that the lanthanum ion fills the O2O4 site and is nine coordinated with a tricapped trigonal prismatic environment; the coordination sphere about the central metal ion is completed by three chlorine atoms. (C) 1999 Elsevier Science S.A. All rights reserved.

Preparation, properties and X-ray structure of a new lanthanum(III) trichloride complex with an asymmetric compartmental cyclic Schiff base

1999

Abstract

The lanthanum (III) complex [La(H2LA)(Cl)(3)] has been prepared by reaction of the preformed ligand H2LA with LaCl3. 7H(2)O or by template procedure. H2LA is the asymmetric [1 + 1] compartmental macrocycle containing an N3O2 Schiff base and an O2O4 crown-like site derived by the condensation of 3,3'-(3,6-dioxaoctane-1,8-diyldioxy)bis(2-hydroxybenzaldehyde) and 1,5-diamino-3-azamethylpentane. The X-ray structure of [La(H2LA)(Cl)(3)] shows that the lanthanum ion fills the O2O4 site and is nine coordinated with a tricapped trigonal prismatic environment; the coordination sphere about the central metal ion is completed by three chlorine atoms. (C) 1999 Elsevier Science S.A. All rights reserved.
1999
crystal structures
lanthanum complexes
Schiff base complexes
compartmental ligand complexes
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/20.500.14243/2995
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