New types of lanthanide complexes
Three new types of lanthanide (Ln) complexes, namely, the first examples of homodinuclear macrocyclic lanthanide complexes, novel binary and ternary gaseous polyatomic lanthanide oxides and new lanthanide oxalato complexes are described in chapters one, two and three respectively. The homodinuclear complexes are 2:2 condensation products of 2,6-diformyl-p-cresol and triethylenetetramine templated by Ln(NO/sub 3/)/sub 3/ and Ln(ClO/sub 4/)/sub 3/. The complexes are dimorphic, and are off-white (the more stable form) when they are obtained from dilute solutions and orange if they arise from more concentrated reactants. The complexes were characterized by elemental analysis, fast atom bombardment mass spectrometry (FAB MS), electronic absorption and IR spectroscopy, thermogravimetry along with preliminary spectroscopic studies using electron paramagnetic resonance, magnetic susceptibility and luminescence. The orange complexes exhibit more antiferromagnetic exchange interactions, low Ln/sup 3 +/magnetic moments and multi-exponential luminescence decay kinetics, whereas the off-white complexes show single exponential luminescence decay and free ion magnetic moments. At low temperatures and in presence of excess triethylenetetramine, solvated light lanthanide mononuclear complexes of a 1:1 acyclic Schiff base acetal were isolated and the structure of one of these was confirmed by single crystal x-ray diffraction crystallography.
- Research Organization:
- Louisiana State Univ., Baton Rouge (USA)
- OSTI ID:
- 6012836
- Resource Relation:
- Other Information: Thesis (Ph. D.)
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
RARE EARTH COMPLEXES
CHEMICAL PROPERTIES
PHYSICAL PROPERTIES
ABSORPTION SPECTROSCOPY
CERIUM OXIDES
CHEMICAL ANALYSIS
CHEMICAL PREPARATION
COLOR
CRYSTAL STRUCTURE
ELECTRON SPIN RESONANCE
EUROPIUM OXIDES
GADOLINIUM OXIDES
GALLIUM OXIDES
HOLMIUM OXIDES
INFRARED SPECTRA
LANTHANUM OXIDES
LUMINESCENCE
MAGNETIC PROPERTIES
MASS SPECTROSCOPY
NEODYMIUM OXIDES
POTASSIUM COMPLEXES
THERMAL GRAVIMETRIC ANALYSIS
THULIUM OXIDES
X-RAY DIFFRACTION
YTTERBIUM OXIDES
YTTRIUM OXIDES
ALKALI METAL COMPLEXES
CERIUM COMPOUNDS
CHALCOGENIDES
COHERENT SCATTERING
COMPLEXES
DIFFRACTION
EUROPIUM COMPOUNDS
GADOLINIUM COMPOUNDS
GALLIUM COMPOUNDS
GRAVIMETRIC ANALYSIS
HOLMIUM COMPOUNDS
LANTHANUM COMPOUNDS
MAGNETIC RESONANCE
NEODYMIUM COMPOUNDS
OPTICAL PROPERTIES
ORGANOLEPTIC PROPERTIES
OXIDES
OXYGEN COMPOUNDS
QUANTITATIVE CHEMICAL ANALYSIS
RARE EARTH COMPOUNDS
RESONANCE
SCATTERING
SPECTRA
SPECTROSCOPY
SYNTHESIS
THERMAL ANALYSIS
THULIUM COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
YTTERBIUM COMPOUNDS
YTTRIUM COMPOUNDS
400201* - Chemical & Physicochemical Properties