| 希土元素异硫氰酸盐与苄胺配合物的制备、性质及标准生成焓的测定 |
| PREPARATION, PROPERTIES AND DETERMINSTION OF STANDARD MOLAR ENTHALPIES OF FORMATION FOR COMPLEXES OF RARE EARTH ISOTHIOCYANATES WITH BENZYLAMINE |
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| 摘要: 制备了Pr、Yb两种希土元素异硫氰酸盐与苄胺的固体配合物.并对其进行了组成分析、红外光谱分析、X射线衍射物相分析和热重分析.测量了298.15K时两种固体配合物RE(NCS)3·4C6H5CH2NH2在HCl水溶液中的反应热和相应的两种希土元素异硫氰酸盐水合物RE(NCS)3·n1H2O(RE为Pr时,n1=7;RE为Yb时,n1=6)在C6H5CH2NH2-HCl-H2O溶液中的积分溶解热以及苄胺C6H5CH2NH2在HCl水溶液中的反应热.藉助本文所设计的热化学循环,求得了这两种配合物的标准生成焓,还计算了它们的晶格能. |
| 关键词: 希土 异硫氰酸盐 苄胺 标准生成焓 |
| 基金项目: 中国科学院科学基金资助课题 |
| Abstract: Two solid complexes of rare earth isothiocyanates with benzylamine were prepaied They were characterized by component analysis, infrared spectra, X-ray powde thermogravimetric analysis. Their chemical formulae were proved to be RE(NCS)3·4C6H5CH2NH2 where RE are Pr and Yb.The integral heats of solution of RE(NCS)3·n1H2O(when RE=Pr, n1=7; RE=Yb, n1=6)in C6H5CH2NH2-HCl-H2O solution, the heats of reaction of RE(NCS)3·4C6H5CH2NH2 with HC1 in aqueous solution and those of C6H5CH2NH2 with HC1 in aqueous solution have been measured calorimetrically at 298.15K. By means of a thermochemical cycle suggested in this paper, the standard molar enthalpies of formation for the above two complexes were obatined and their lattice energies were calculated. |
| Keywords: rare earth isothiocyanate beazylamine standard molar enthalpy of formation |
| 投稿时间：1989-07-12 |
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| 尹敬执,蒋本杲,杨淑荣.希土元素异硫氰酸盐与苄胺配合物的制备、性质及标准生成焓的测定[J].无机化学学报,1991,7(4):444-448. |
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