الفهرس 
AcknowledgementOnly 14 pages are availabe for public view
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Abstract
rl ion complex formations are among the prominent interactions in nature, metal complexation is widespread interest. It is studied not only by fealytical or inorganic chemists, but by physical and organic chemists, also, by Biochemists, pharmacologists, molecular biologists and environmentalists. The purpose of this thesis is studying in depth, the formation of binary and ary complexes of some lanthanide and actinide metal ions [Th(IV), U02(n), gl), and La(IH)] with some aliphatic and aromatic hydroxamic acids (acetohydroxamic acid, benzohydroxamic acid and salicylhydroxamic acid) on the one hand, and diamines [ethylenediamine (en), 1,3-diaminopropane (dap), f^-phenylenediamine (o-pda), m-phenylenediamine (m-pda) and p-phenylenediamine (p-pda)], and evaluation of the effect of temperature of the medium on the stability of some binary and ternary systems. This thesis is organized as follows:- In Chapter /, an introduction of some biochemical importance of lanthanide and actinide metal ions, binary and ternary complex formation, the importance of hydroxamic acids in life (biological systems). To date and to the best of my knowledge, Chapter II is a concerted attempt to outline briefly a concise and complete review of the previous relevant tootentiometric studies conducted in the protonation constants, and formation of binary and ternary complexes of hydroxamic acids. Chapter III describes the experimental part of this thesis, which includes materials and solutions, experimental technique ipotentiometry), apparatus, procedure and measuring techniques (stability constant calculations). The results and discussions in Chapter IV, the acid base properties of the jigands (Aha, Bha, Sham, en, dap, o-pda, m-pda and p-pda) were investigated Nummary and discussed. The acidity constants of the ligands were determined and used for determining the stability constants of the binary and ternary complexes formed in aqueous medium under the experimental conditions (t =25 °C and / = 0.10 mol dm”3 NaNOs). The ternary complex formation was found to occur in a stepwise manner. The stability constants of these binary and ternary systems were calculated and listed in Tables (1-5). Hie order of stability of the ternary complexes in terms of the nature of hydroxamic acids, diamines and metal ions m investigated and discussed. The values of A log K and %R.S. for the ternary ^sterns have been evaluated and discussed and allotted in Tables (3-5). In addition, evaluation of the effect of temperature of the medium on the stability of the binary and ternary system metal- en- Aha or Sham, where metal-lIb(IV), UC>2(II), Ce(m), and La(IH)) has been studied. The thermodynamic parameters associated with the dissociation of the ligands studied (Aha, Sham and en), the interaction of metal ions with ligands at 1:1 and at 1:1:1 molar ratios were calculated and discussed and listed in Tables (6,7).