الدراسة الكيميائية البلورية للمركبات MIISn(OH)6 حيث MII= Zn, Fe, Cu, Ca

Authors

  • رياض طلي

Abstract

 

The compounds MIISn(OH)6 where (MII= Zn, Fe, Cu, Ca) have been  synthesized at room temperature. The X-ray powder diffraction method, Infrared spectroscopy and DTA techniques were used to characterized the products. The cell parameters, volume of lattice, experimental and theoretical densities of the compounds were identificated. FeSn(OH)6 was instable because of the particular oxidation of Fe2+ to Fe3+ in air with particular substitution of OH-by O2-, that fact present the formula FeIIISnO(OH)5. Hydroxystannate of mixed bivalent- metals were obtained. The results demonstrate the formation of solid solutions for both ions Zn, Cu by replacement in different ratios. The DTA curve demonstrates two endothermic effects and one exothermic effect for all products.

تم اصطناع المركبات MIISn(OH)6 حيث MII= Zn, Fe, Cu, Ca بدرجة الحرارة العادية. استخدمت طريقة انعراج الأشعة السينية ومطيافية الأشعة تحت الحمراء وتقنية التحليل الحراري التفاضلي لدراسة خواص المركبات الناتجة. تم تحديد أبعاد الشبكة البلورية وحجم الخلية الأساسية والكثافة التجريبية والنظرية لكل مركب ناتج. لقد كان المركب  FeSn(OH)6 غير ثابت بسبب الأكسدة الجزئية للحديد  Fe2+ إلى Fe3+ في الهواء رافقه استبدال جزئي للشواردOH- بالشوارد O2- وهذا ما أدى لوضع الصيغة الجديدة للمركب بعد الأكسدة وهي Fe3+SnO(OH)5 . كما تم الحصول على هيدروكسي ستانات المعادن المختلطة لمعدني ثنائي التكافؤ Cu, Zn . بينت النتائج أنه يتشكل محاليل صلبة لهيدروكسوستانات هذين المعدنين بنسب مختلفة بطريقة الاستبدال. يبين منحني DTA لكافة المركبات وجود قمتين يعبر كل منهما عن فعل ماص للحرارة وقمة واحدة تعبر عن فعل ناشر للحرارة .

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Published

2018-12-09

How to Cite

1.
طلي ر. الدراسة الكيميائية البلورية للمركبات MIISn(OH)6 حيث MII= Zn, Fe, Cu, Ca. TUJ-BA [Internet]. 2018Dec.9 [cited 2024May20];34(1). Available from: https://journal.tishreen.edu.sy/index.php/bassnc/article/view/5241

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Vol. 34 No. 1 (2012): العلوم الأساسية

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