【摘 要】
：
Two coordinate reactions, NdCl3*6H2O(s) +3CCl3COOH(s)( or TCA) =Nd(TCA)3*3H2O(s) +3HCl(g) +3H2O(l) and Nd(TCA)3*3H2O(s) +2C9H7NO(s)= Nd(TCA)(C9H6NO)2 (s) +2CCl3
【机 构】
：
Department of Chemistry,College of Chemistry and Molecular Science
论文部分内容阅读
Two coordinate reactions, NdCl3*6H2O(s) +3CCl3COOH(s)( or TCA) =Nd(TCA)3*3H2O(s) +3HCl(g) +3H2O(l) and Nd(TCA)3*3H2O(s) +2C9H7NO(s)= Nd(TCA)(C9H6NO)2 (s) +2CCl3COOH(s) +3H2O(l), were studied by the classical solution calorimetry at 298.15K. The molar dissolution enthalpies of the reactants and the products in certain solvent (the first reaction in 1 mol*L-1 HCl, the second in a mixed solution consisting of absolute ethyl alcohol, dimethyl sulfoxide and 4 mol*L-1 HCl ) were measured by using an isoperibol calorimeter at 298.15K . From the results and other auxiliary quantities, the standard molar formation enthalpies of [Nd(TCA)3*3H2O,s,298.15K] and [Nd(TCA) (C9H6NO)2 ,s, 298.15K] are determined as ΔfHm°[Nd(TCA)3*3H2O,s,298.15K]= -3053.3 kJ*mol-1 and ΔfHm°[Nd(TCA) (C9H6NO)2 ,s, 298.15K] = -1355.6 kJ*mol-1.
其他文献
本文针对高中英语听力教学中的一个突出问题，以《英语课程标准》等为依据，构建高中英语听力微技能训练资源库。便于教师在听力教学时，补充和加强学生的听力微技能，从而达到提高听
阅读教学中的自主探究性学习就是学生在教师的激励和指导下，以类似研究的认知方式和心理过程进行学习，对语文学习中遇到的问题进行探究，并在探究过程中主动地获取知识、运用知识
培养学生的写作能力是提高初中英语教学成绩的重要目标之一。培养听、说、读的能力固然重要，但如果没有写作能力的支撑，就不能达到对所学知识的理解和灵活运用的目的。实践证明
初中英语教学的目的绝不只是学生在教师的指导下，获取课文所传达的信息，也不仅仅是让学生掌握课文所包含的知识要点，而必须能够培养学生运用语言表达思想的能力，这也是《英语课程
A new aryl amide type tetrapodal ligand L (1, 1, 1, 1-tetrakis-{[(2-benzylaminoformyl) phenoxyl]methyl}methane) and its europium and terbium nitrate complexes w
Lanthanum chloride α-D-ribopyranose pentahydrate complex was prepared and speculated its structure from the similar IR spectra of corresponding praseodymium an
In this paper, the light pressure force in low and high intensity laser fields is derived. The exact numerical results of forces Fn∥(n=0,1,2,3,4,5,6…) through
The emission properties of a newly synthesized organic two-photon absorption dye, trans-4-[p-(N-ethyl-N-ethylamino)-styryl]-N-methyl-pyridinium tetraphenylborat
Whether the particle will be trapped by the solid-liquid interface or not is dependent on its moving behavior ahead of theinterface, so a mathematical model has
With carbon extraction replica technique, electron diffraction and EDAX analysis, second particle size distributionin two Ti microalloyed steels and their heat-