Structural characterization of [Ln(TFA)(3)(HMPA)(3)] (Ln=La, Nd, Er) complexes

Authors
Bombieri, G Benetollo, F Del Pra, A Oliveira, VD Melo, DMA Zinner, LB Vicentini, G
Citation
G. Bombieri et al., Structural characterization of [Ln(TFA)(3)(HMPA)(3)] (Ln=La, Nd, Er) complexes, J ALLOY COM, 323, 2001, pp. 181-184
Citations number
15
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
JOURNAL OF ALLOYS AND COMPOUNDS
ISSN journal
09258388 → ACNP
Volume
323
Year of publication
2001
Pages
181 - 184
Database
ISI
SICI code
0925-8388(20010712)323:<181:SCO[(N>2.0.ZU;2-L
Abstract
The X-ray data on La, Nd, Er complexes ([Ln(TFA)(3)(HMPA)(3)]) show that th ey crystallize in different forms depending on the solvent content. Er is s ix and seven coordinated in the two complex cations coexisting in the cryst al cell: [Er(TFA)(2)(HMPA)(4)](+) and [Er(TFA)(2)(HMPA)(2)(H2O)(3)](+). The trifluoroacetate anions are monodentate in both coordination polyhedra. in the [Nd(TFA)(2)(HMPA)(4)](+) cations, Nd is eight coordinated with bidenta te trifluoroacetate ligands. (C) 2001 Elsevier Science B.V. All rights rese rved.