کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7061971 | 1459423 | 2018 | 25 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Low temperature heat capacities and thermodynamic functions of two novel cobalt (II) and nickel (II) mononuclear compounds constructed with o-pthalate and phenanthroline
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
جریان سیال و فرایندهای انتقال
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Low temperature heat capacities and thermodynamic functions of two novel cobalt (II) and nickel (II) mononuclear compounds constructed with o-pthalate and phenanthroline Low temperature heat capacities and thermodynamic functions of two novel cobalt (II) and nickel (II) mononuclear compounds constructed with o-pthalate and phenanthroline](/preview/png/7061971.png)
چکیده انگلیسی
Two novel mononuclear compounds, formulated as [Co(phen)(pae)(H2O)3]â¯ââ¯H2O (1) and [Ni(phen)(pae) (H2O)3]â¯ââ¯H2O (2) (phenâ¯=â¯1,10-phenanthroline, paeâ¯=â¯o-pthalic acid), has been synthesized and structurally characterized. The magnetic measurement revealed that compound 1 and 2 could possess antiferromagnetic exchange interactions between CoII/NiII ions through the hydrogen bonds-bridging. The low temperature heat capacity of compound 1 and 2 were measured using the heat capacity option of a Quantum Design Physical Property Measurement System (PPMS) in the temperature range between (1.9-300) K. The measured heat capacities were fitted to a series of theoretical and empirical models, and the corresponding thermodynamic functions were consequently calculated based on the fitting parameters. Moreover, the heat capacities of these two compounds behave an upturn below 10â¯K, which could be attributed to the Schottky effect occurring at this low temperature region.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Thermochimica Acta - Volume 663, 10 May 2018, Pages 176-182
Journal: Thermochimica Acta - Volume 663, 10 May 2018, Pages 176-182
نویسندگان
Rongchun Li, Hui Zheng, Yushan Hua, Rongmin Wei, Xin Liu, Zhicheng Tan, Quan Shi,