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TITLE
DEDICATION
CERTIFICATE
DECLARATION
ACKNOWLEDGEMENT
CONTENTS
Preface
LIST OF NOTATIONS AND ABBREVIATIONS
LIST OF TABLES
LIST OF FIGURES
1. INTRODUCTION
1.1 Chemistry of Rare Earths: General
Chemistry of Scandium
Chemistry of Yttrium
Chemistry of Lanthanides
1.2 Coordination Chemistry of Yttrium
1.3 Coordination Chemistry of Lanthanides
1.4 Bonding in Lanthanide Complexes
Table 1.1 Comparison of 4f -3d metal ions
1.5 Stoichiometry, Coordination Number and Molecular Geometry
Fig.1.1 Ideal polyhedra for various high coordination numbers
1.6 Applications of Lanthanide Complexes
1.7 Rare Earth Complexes of Antipyrine Derivatives: A Review
2. REAGENTS AND PROCEDURAL DETAILS
2.1 Reagents
2.1.1 Rare earth oxides
2.1.2 Preparation of the Rare earth salts
2.1.3 Ethylenediamine
2.1.4 The ligands
2.1.5 Solvents
2.1.6 Other reagents
2.2 Analyses of the Complexes
2.2.1 Estimation of the metal content
2.2.2 Estimation of the perchlorate content
2.2.3 Estimation of the iodide content
2.3 Physicochemical Methods used in the present investigation
2.3.1 Electrical conductance
2.3.2 Infrared spectra
a) ligand vibrations characteristic of the free ligand.
b) skeletal vibrations characteristic of the whole complex molecule,
c) coupled vibrations.
Table 2.2. Vibrations of the perchlorate. ion as a function of symmetry.
2.3.3 Proton NMR spectra
2.3.4 Electronic spectra
2.3.5 Thermal analysis
2.3.6 Analyses of carbon, hydrogen and nitrogen
3. STUDIES ON RARE EARTH COMPLEXES OF 4-FORMYL-2, 3-DIMETHYL-I-PHENYL-3-PYRAZOLIN-5-ONE
Experimental
3.1 Preparation of the Complexes
3.1.1 Rare earth perchlorate complexes of FDPP
3.1.2 Rare earth nitrate complexes of FDPP
3.1.3 Rare earth iodide complexes of FDPP
Results and Discussion
3.2 Analyses and Physicochemical Studies
3.2.1 Appearance and solubility of the complexes
3.2.2 Elemental analyses
3.2.3 Electrical conductance
Perchlorate complexes
Nitrate complexes
Iodide complexes
3.2.4 Infrared spectra
Perchlorate complexes
Nitrate complexes
Iodide complexes
3.2.5 Proton NMR spectra
Perchlorate complexes of yttrium and lanthanum
Nitrate complexes of yttrium and Ianthanum
Iodide complexes of ytbium and lanthanum
3.2.6 Electronic spectra
Perchlorate complexes
Nitrate complexes
Iodide complexes
3.3 Summary and Conclusion
Perchlorate complexes
Nitrate complexes
Iodide complexes
4. STUDIES ON RARE EARTH COMPLEXES OF N, N-BIS (4-ANTIPYRYLMETHYLIDENE) ETHYLENEDIAMINE
Experimental
4.1 Preparation of the Complexes
4.1.1 Rare earth perchlorate complexes of BAME
4.1.2 Rare earth nitrate complexes of BAME
4.1.3 Rare earth iodide complexes of BAME
Results and Discussion
4.2 Analyses and Physicochemical Studies
4.2.1 Appearance and solubility
4.2.2 Elemental analyses
4.2.3 Electrical conductance
Perchlorate complexes
Nitrate complexes
Iodide complexes
4.2.4 Infrared spectra
Perchlorate complexes
Nitrate complexes
Iodide complexes
4.2.5 Proton NMR spectra
Perchlorate complexes of m i u m and lanthanum
Nitrate complexes of yttrium and lanthanum
Iodide complexes of yttrium and lanthanum
4.2.6 Electronic spectra
4.3 Summary and Conclusion
5. THERMAL STUDIES ON LANTHANIDE COMPLEXES OF SOME ANTIPYRINE DERIVATIVES
5.1 Thermal Methods of Analysis
Thermogravimetry (TG)
Derivative Thermogravimetry (DTG)
Differential Thermal Analysis (DTA)
Differential Scanning Calorimetry (DSC)
5.2 Applications of Thermogravimetry in Solids
Phenomenological aspects
Kinetic aspects
Mechanistic aspects
5.3 Thermal Studies on Some Selected Lanthanide Complexes
Experimental
5.4 Preparation of the Complexes
5.5 Thermogravimetric Analyses of the Complexes
Results and Discussion
5.6 Phenomenological Aspects
5.6.1 Lanthanum complexes of FDPP
Lanthanum perchlorate compkx
Lanthanum nitrate complex
Lanthanum iodide complex
Structure-thermal stability relation
5.6.2 Lanthanum complexes of BAME
5.6.3 Lanthanide nitrate complexes of FDPP
Fig. 5.1 Correlation between the decomposition onset temperaturewith the ionic radii.
5.6.4 Lanthanide perchlorate complexes of BAME
5.7 Kinetic Aspects
5.7.1 Lanthanum complexes of FDPP
5.7.2 Lanthanum complexes of BAME
5.7.3 Lanthanide nitrate complexes of FDPP
5.7.4 Lanthanide perchlorate complexes of BAME
5.8 Mechanistic Aspects
5.9 Summary and Conclusion
6. SUMMARY
Complexes of FDPP
Complexes of BAME
Thermal Studies on Selected Complexes of FDPP and BAME
TABLES AND FIGURES
REFERENCES