دراسة تشكل المركبات المعقدة المتعددة الايترات لكلوريدات التوتياء والكالسيوم في الجملة الثلاثية :ZnCl2-CaCl2-THF
Abstract
تم في هذا البحث دراسة تشكل المركبات المعقدة المتعددة الايترات لكلوريدات التوتياء والكالسيوم كنتيجة للتأثيرات المتبادلة في الجملة الثلاثية : ZnCl2-CaCl2-THF عند درجات الحرارة T=258C, T=508C وفقاً للتفاعل التالي :
aZnCl2+bCaCl2+nTHFD aZnCl2.bCaCl2.nTHF
ترافقت هذه التأثيرات المتبادلة بارتفاع درجة حرارة المزيج التفاعلي في الجملة المدروسة، انتباج الطور الصلب لفترة من الزمن وتغير الانحلالية المشتركة في الطور السائل.
ودرست ايضاً التوازنات الطورية والشروط اللازمة لفصل المركبات المعقدة عن جملها وحفظها. وتم ايضاً دراسة بعض الخواص الفيزيائية والكيميائية للمعقدات باستخدام مطيافية UV-Spectroscopy .
أظهرت هذه الدراسة أن تشكل المركبات المعقدة بين ZnCl2 وCaCl2 في وسط المحل العضوي THF (تتراهيدروفوران) حدثت في الشروط العادية (زمن حدوث التفاعل ، سرعة التحريك الدوراني ودرجة الحرارة) وأن الصيغة المجملة هي : aZnCl2.bCaCl2.nTHF وبالتالي فالبنية الداخلية تتغير تبعاً للشروط الخارجية المطبقة على الجملة وذلك بتغير (a,b,n ).
The formation of polyethers complex compounds of Zinc and calcium chlorides had been studied ,as a result of exchanging effects in the Tri-system ZnCl2-CaCl2-THF at a Temperature of T=258C and T=508C according to the following reaction :
aZnCl2+bCaCl2+nTHFD aZnCl2.bCaCl2.nTHF
This exchanging effects was coincided at the increase in Temperature of the reacting mixture in the studied system, swelling the solid phase to a period of time and changing the common solubility in the liquid phase .
The phase equilibriums and the necessary conditions for separating the complex compounds from their systems and preservation was studied .some of the physical and chemical properties of complexes had been studied ,using UV-spectroscopy .
This study demonstrated that the formation of complex compounds between ZnCl2 and CaCl2 in a medium of organic solvent THF occured in normal conditions (time of occurring reaction ,speed of circulatory movement and temperature). .The chemical formula is consequently, the internal structure changed a according to the external conditions ,that is applied on the system due to the changing of (a ,b, n) .
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