کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9693943 | 1459634 | 2005 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Synthesis, crystal structure and thermal decomposition mechanism of complex [Sm(o-MBA)3phen]2
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
جریان سیال و فرایندهای انتقال
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Synthesis, crystal structure and thermal decomposition mechanism of complex [Sm(o-MBA)3phen]2 Synthesis, crystal structure and thermal decomposition mechanism of complex [Sm(o-MBA)3phen]2](/preview/png/9693943.png)
چکیده انگلیسی
The title complex [Sm(o-MBA)3phen]2 (o-MBA, o-methylbenzoate; phen, 1,10-phenanthroline) was prepared and characterized by single crystal X-ray diffraction, elemental analysis, IR spectra and TG-DTG techniques. The results show that the crystal is triclinic, space group P Ä« with a = 13.1364(10) Ã
, b = 14.3739(11) Ã
, c = 17.4356(13) Ã
; α = 83.1100(10)°, β = 83.7760(10)°, γ = 73.0520(10)°, Z = 2, Dc = 1.568 Mg/m3, F (000) = 1476. The crystal is consisted of two similar types of binuclear molecule. Each Sm3+ is nine-coordinated by one bidentate chelating carboxylate group, two bidentate bridging and two tridentate chelating-bridging carboxylate groups, as well as one 1,10-phenanthroline molecule. The thermal decomposition mechanism of [Sm(o-MBA)3phen]2 has been determined on the basis of thermal analysis. The dependences of E âα for the first-stage decomposition process were determined by using Ozawa-iterative procedure, which show the E values varied with the extent of conversion. In addition, the lifetime equation at weight-loss of 10% was deduced as ln Ï = â25.5547 + 18511.68/T by isothermal thermogravimetric analysis.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Thermochimica Acta - Volume 438, Issues 1â2, 1 November 2005, Pages 172-177
Journal: Thermochimica Acta - Volume 438, Issues 1â2, 1 November 2005, Pages 172-177
نویسندگان
Ning Ren, Jian-Jun Zhang, Su-Ling Xu, Rui-Fen Wang, Shu-Ping Wang,