Thermochemistry on the complex of erbium perchlorate with L-alpha-glutamic acid [Er-2(L-Glu)(2)(H2O)(6)](ClO4)(4)center dot 6H(2)O(S)
文献类型：期刊论文
| 作者 | Di You-Ying; Zhang Jian; Tan Zhi-Cheng |
| 刊名 | chinese journal of chemistry
 |
| 出版日期 | 2007-10-01 |
| 卷号 | 25期号:10页码:1423-1429 |
| 关键词 | [Er-2(Glu)(2)(H2O)(6)](ClO4)(4)center dot 6H(2)O(s) adiabatic calorimetry heat capacity isoperibol solution-reaction calorimetry standard molar enthalpy of formation |
| ISSN号 | 1001-604x |
| 产权排序 | 2;2 |
| 通讯作者 | 邸友莹 |
| 英文摘要 | a coordination compound of erbium perchlorate with l-alpha-glutamic acid, [er-2(giu)(2)((ho)-o-2)(6)](c1o(4))(4)center dot 6h(2)o(s), was synthesized. by chemical analysis, elemental analysis, ftir, tg/dtq and comparison with relevant literatures, its chemical composition and structure were established. the mechanism of thermal decomposition of the complex was deduced on the basis of the tg/dtg analysis. low-temperature heat capacities were measured by a precision automated adiabatic calorimeter from 78 to 318 k. an endothermic peak in the heat capacity curve was observed over the temperature region of 290-318 k, which was ascribed to a solid-to-solid phase transition. the temperature t-trans, the enthalpy delta h-trans(m) and the entropy delta s-trans(m) of the phase transition for the compound were determined to be: (308.73 +/- 0.45) k, (10.49 +/- 0.05) kj center dot mol(-1) and (33.9 +/- 0.2) j center dot k-1 center dot mol(-1). polynomial equation of heat capacities as a function of the temperature in the region of 78-290 k was fitted by the least square method. standard molar enthalpies of dissolution of the mixture [2ercl(3)center dot 6h(2)o(s)+2l-glu(s)+6nac1o(4)center dot h2o(s)] and the mixture { [er-2(glu)(2)(h2o)(6)](c1o(4))(4 center dot)6h(2)o(s) + 6nac1(s)} in 100 ml of 2 mol center dot dm(-3) hc1o(4) as calorimetric solvent, and 12hc104(l)) in the solution a at t=298.15 k were measured to be, delta h-d(m,1)=(31.552 +/- 0.026) kj center dot mol(-1), delta h-d(m,2)=(41.302 +/- 0.034) kj center dot mol(-1), and delta dh(m,3) = (14.986 +/- 0.064) kj center dot mol(-1), respectively. in accordance with hess law, the standard molar enthalpy of formation of the complex was determined as delta h-f theta(m)=-(7551.0 +/- 2.4)kj center dot mol by using an isoperibol solution-reaction calorimeter and designing a thermochemical cycle. |
| WOS标题词 | science & technology ; physical sciences |
| 类目[WOS] | chemistry, multidisciplinary |
| 研究领域[WOS] | chemistry |
| 关键词[WOS] | calorimeter |
| 收录类别 | SCI |
| 原文出处 | true |
| 语种 | 英语 |
| WOS记录号 | WOS:000250356900005 |
| 公开日期 | 2010-11-30 |
| 源URL | [http://159.226.238.44/handle/321008/99677]  |
| 专题 | 大连化学物理研究所_中国科学院大连化学物理研究所 |
| 作者单位 | 1.Liaocheng Univ, Coll Chem & Chem Engn, Liaocheng 252029, Shandong, Peoples R China 2.Chinese Acad Sci, Dalian Inst Chem Phys, Thermochem Lab, Dalian 116023, Liaoning, Peoples R China |
| 推荐引用方式 GB/T 7714 | Di You-Ying,Zhang Jian,Tan Zhi-Cheng. Thermochemistry on the complex of erbium perchlorate with L-alpha-glutamic acid [Er-2(L-Glu)(2)(H2O)(6)](ClO4)(4)center dot 6H(2)O(S)[J]. chinese journal of chemistry,2007,25(10):1423-1429. |
| APA | Di You-Ying,Zhang Jian,&Tan Zhi-Cheng.(2007).Thermochemistry on the complex of erbium perchlorate with L-alpha-glutamic acid [Er-2(L-Glu)(2)(H2O)(6)](ClO4)(4)center dot 6H(2)O(S).chinese journal of chemistry,25(10),1423-1429. |
| MLA | Di You-Ying,et al."Thermochemistry on the complex of erbium perchlorate with L-alpha-glutamic acid [Er-2(L-Glu)(2)(H2O)(6)](ClO4)(4)center dot 6H(2)O(S)".chinese journal of chemistry 25.10(2007):1423-1429. |
入库方式： OAI收割
来源：大连化学物理研究所
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