title: Mössbauer effect studies on some bioinorganic complexes of europium.
abstract: The bioinorganic complexes of europium with N-acetyl-DL-alanine, N-acetyl-DL-valine, and DL-alanyl-DL-alanine have been synthesized and the Mössbauer spectra at room temperature have been measured for these solid state complexes. The Mössbauer parameters indicate that the water molecules in these complexes are not directly linked to the central europium ion and are outside the coordination sphere of europium and biological ligands, and that the chemical bond between the europium ion and the ligands may be predominantly ionic in character, with the possibility of partial covalent contribution.
authors.affiliation: Changchun Institute of Applied Chemistry, Academia Sinica, Jilin, China.
authors.forename: C J
authors.initials: CJ
authors.lastname: Niu
authors.forename: Y Q
authors.initials: YQ
authors.lastname: Jia
authors.forename: M L
authors.initials: ML
authors.lastname: Liu
authors.forename: X W
authors.initials: XW
authors.lastname: Liu
authors.forename: M Z
authors.initials: MZ
authors.lastname: Jin
mesh_terms: D000409:Alanine / Q000031:analogs & derivatives*; D004151:Dipeptides / Q000737:chemistry*; D005063:Europium / Q000737:chemistry*; D015204:Spectroscopy, Mossbauer; D014633:Valine / Q000031:analogs & derivatives*
chemical_list: D004151:Dipeptides; C002956:alanylalanine; D005063:Europium; D014633:Valine; D000409:Alanine