COMPLEXES BETWEEN LANTHANIDE PICRATES AND N,N-DIMETHYLACETAMIDE (DMA)- SYNTHESIS, CHARACTERIZATION AND STRUCTURE OF THE SAMARIUM COMPOUND

Citation
Cvp. Demelo et al., COMPLEXES BETWEEN LANTHANIDE PICRATES AND N,N-DIMETHYLACETAMIDE (DMA)- SYNTHESIS, CHARACTERIZATION AND STRUCTURE OF THE SAMARIUM COMPOUND, Journal of alloys and compounds, 225(1-2), 1995, pp. 350-353
Citations number
14
Categorie Soggetti
Chemistry Physical","Metallurgy & Metallurigical Engineering","Material Science
ISSN journal
09258388
Volume
225
Issue
1-2
Year of publication
1995
Pages
350 - 353
Database
ISI
SICI code
0925-8388(1995)225:1-2<350:CBLPAN>2.0.ZU;2-#
Abstract
Complexes with the composition Ln(pic)(3).3DMA (Ln = La-Lu, Y; pie, pi crate; DMA, N,N-dimethylacetamide) were synthesized and characterized. They behave as non-electrolytes in nitromethane and acetonitrile. Acc ording to X-ray powder patterns, three different types of diffractogra ms were obtained: (a) La-Pr; (b) Nd-Yb, Y; (c) Lu. Single-crystal X-ra y analysis of the samarium compound indicates that Sm3+ is coordinated by six oxygen donors from three bidentate picrates through the phenox y and ortho nitro groups and by three oxygens from the DMA molecules f orming a somewhat distorted tricapped trigonal prism. The absorption s pectra of the neodymium compound in the solid state and in solution we re investigated.