Electrochemical Studies on Some Solutions Their Metal Complexes in Buffer Electroactive Organic Compounds and
Kadry Mohamed El-Halpy;
Abstract
This thesis contains study of the electrochemical and spectral behaviour of some hydrazone compounds to obtain full information about their electrode reaction in buffer solutions at mercury electrode. The thesis includes three chapters:
Chapter I contains a literature survey on the electrochemical studies of organic compounds containing hydrazone and azo linkage in addition to their metal complexes.
Chapter II contains the experimental part of the work such as preparation of the solid compounds, preparation of solutions, measureing techniques and the instrurnentains used in the present study.
Chapter III consists of six parts:
The first part, includes the results obtained from the polarographic studies of the compounds under investigation (I-IX) in universal buffer solutions, containing 40% (v/v) DMF of different pH values (2-12). The polarogrmas of compounds ( I, III, IV, Vlll ) showed one single wave whereas the rest of the compounds showed two reduction waves of unequal heights. The•half-wave potential (E 1!2) of all the investigated compounds shifted towards more negative values with increasing pH of the electrolysis medium confirming that hydrogen ions are consumed in the reduction processes. The plots of the half wave potential (E112) versus pH give linear correlations of positive slopes. The limiting current (i1) of each wave is proportional to the square root of mercury height. On plotting log (i1) versus log h, straight lines of slope values 0.57-
0.95 were obtained, indicating that the reduction process for all the
Chapter I contains a literature survey on the electrochemical studies of organic compounds containing hydrazone and azo linkage in addition to their metal complexes.
Chapter II contains the experimental part of the work such as preparation of the solid compounds, preparation of solutions, measureing techniques and the instrurnentains used in the present study.
Chapter III consists of six parts:
The first part, includes the results obtained from the polarographic studies of the compounds under investigation (I-IX) in universal buffer solutions, containing 40% (v/v) DMF of different pH values (2-12). The polarogrmas of compounds ( I, III, IV, Vlll ) showed one single wave whereas the rest of the compounds showed two reduction waves of unequal heights. The•half-wave potential (E 1!2) of all the investigated compounds shifted towards more negative values with increasing pH of the electrolysis medium confirming that hydrogen ions are consumed in the reduction processes. The plots of the half wave potential (E112) versus pH give linear correlations of positive slopes. The limiting current (i1) of each wave is proportional to the square root of mercury height. On plotting log (i1) versus log h, straight lines of slope values 0.57-
0.95 were obtained, indicating that the reduction process for all the
Other data
| Title | Electrochemical Studies on Some Solutions Their Metal Complexes in Buffer Electroactive Organic Compounds and | Other Titles | دراسات كهرو كيميائية على بعض المركبات العضوية النشطة كهربيا متراكباتها فى المحاليل المنظمة | Authors | Kadry Mohamed El-Halpy | Issue Date | 1999 |
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