|Statement||Laura Cañadillas-Delgado ... [et al.].|
|LC Classifications||QD181.G4 M34 2010|
|The Physical Object|
|LC Control Number||2010029771|
A spin density functional (SDFT) study of carboxylate-bridged and diazenido-bridged dinuclear gadolinium compounds is presented. Calculated magnetic coupling constants for the carboxylate-bridged structures are in good agreement with experimental data, confirming the ability of the broken symmetry approach used in this work to predict magnetic behavior in such by: The structures of 1–3 have in common the double oxo-carboxylate bridge between gadolinium(III) ions (μ-O:κ 2 O,O′) either as a discrete units (1 and 2) or as a chain (3) and one (3) or two (2) syn–syn carboxylate bridges that reinforce this bridging pathway in 2 and by: This book presents a systematic study of complex formation between gadolinium(III) and carboxylate-containing ligands which investigates the factors that govern the magnetic coupling . This suggests that magnetic interactions between the Gd(III) cations in the dimers may be operative. However, the complexity of the system does not allow further conclusions to be reached. In summary, the main result of the present work is to afford structural data for new gadolinium (III) dimers bridged by carboxylate by:
By modeling the magnetic behavior of the Gd compound with a dinuclear Hamiltonian ℋ S = gμ B (S A + S B)B o − J o S A S B (S A = S B = 7/2), a ferromagnetic exchange interaction J o = cm-1 was evaluated between Gd ions situated at d o = Å in dinuclear units bridged by two symmetry-related tridentate carboxylate oxygens. The. The present paper is devoted to the study of original trinuclear (CuII, LnIII, CuII) complexes (Ln = La, Ce, Gd). They derive from the polydentate ligands H2Li (i = 1, 3, 4) represented in Figure 1. The crystal and molecular structures of two complexes have been determined at room temperature. The (Cu, Gd, Cu) complex of H2L1 1Gd and the (Cu, Ce, Cu) complex of H2L3 3Ce crystallize in the Cited by: Two- and Three-Dimensional Networks of Gadolinium(III) with Dicarboxylate Ligands: Synthesis, Crystal Structure, and Magnetic Properties. Magnetic Interactions in Oxo-Carboxylate Bridged Gadolinium (III) Complexes: Synthesis, Crystal Structures and Magnetic Properties Application of the Gadolinium Foils as Converters of Thermal Neutrons in Detectors of Nuclear Radiation.
The compounds contain isostructural chains built by Ln nodes bridged by carboxylate groups and connected by H bonds. A ferromagnetic exchange interaction Jo = cm -1 between Gd (III) . Synthesis, Crystal Structure, and Magnetic Behaviour of Gd(CF2HCOO)3(phen)Single crystals of Gd(CF2HCOO)3(phen) have been obtained by reaction of Gd(CF2HCOO)3(H2O)2H2O with 1,10–phenanthroline. comprehensive understanding of the static critical magnetic behavior of gadolinium. II. EXPERIMENTAL METHODS AND DATA ANALYSIS A single crystal of high purity gadolinium with a resis- tivity ratio of p( Wp( K) = was cut into the form of a cube with an edge length t cm and the. Magnetic interactions in oxo-carboxylate bridged gadolinium (III) complexes by Laura Cañadillas-Delgado; Analytical chemistry of uranium: environmental, forensic, nuclear, and toxicological applications by Zeev Karpas.