skip to main content

Title: Lanthanide complexes of 3-acetyl-4-hydroxy-6-methyl-2H-pyran-2-one

The title ligand (H(Dh), dehydroacetic acid) reacts with lanthanide(III) acetates in anhydrous methanol to form complexes of formula (M(Dh){sub 3}(MeOH)). When hydrated lanthanide acetates are used, hydrated compounds such as (Ce(Dh){sub 3}(H{sub 2}O)) or (Eu(Dh){sub 3}(H{sub 2}O)).H{sub 2}O are obtained. The reaction of lanthanum triacetate with H(Dh) yields the mixed complex (La(Dh){sub 2}(O{sub 2}CMe)), formation of the 1:3 complex also being unfavored in the presence of a large ligand excess. The complexes have been characterized by infrared and NMR ({sup 1}H and {sup 13}C) spectroscopy and by thermogravimetric measurements.
Authors:
;  [1] ;  [2]
  1. (Istituto di Chimica e Tecnologia dei Radioelementi del C.N.R., Padova (Italy))
  2. (Dipartimento di Chimica Inorganica, Metallorganica ed Analitica dell'Universita, Padova (Italy))
Publication Date:
OSTI Identifier:
7305469
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Coordination Chemistry; (United States); Journal Volume: 22:3
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; CERIUM COMPLEXES; CHEMICAL PREPARATION; EUROPIUM COMPLEXES; LANTHANUM COMPLEXES; ABSORPTION SPECTROSCOPY; CARBON 13; EXPERIMENTAL DATA; INFRARED SPECTRA; LIGANDS; NUCLEAR MAGNETIC RESONANCE; THERMAL GRAVIMETRIC ANALYSIS; CARBON ISOTOPES; CHEMICAL ANALYSIS; COMPLEXES; DATA; EVEN-ODD NUCLEI; GRAVIMETRIC ANALYSIS; INFORMATION; ISOTOPES; LIGHT NUCLEI; MAGNETIC RESONANCE; NUCLEI; NUMERICAL DATA; QUANTITATIVE CHEMICAL ANALYSIS; RARE EARTH COMPLEXES; RESONANCE; SPECTRA; SPECTROSCOPY; STABLE ISOTOPES; SYNTHESIS; THERMAL ANALYSIS 400201* -- Chemical & Physicochemical Properties; 400102 -- Chemical & Spectral Procedures