| Y(NCS)3·4(1/2)H2O和Y(NCS)3·2(1/2)H2O的制备、性质及标准生成焓的测定 |
| PREPARATION, PROPERTIES AND DETERMINATION OF STANDARD MOLAR ENTHALPIES OF FORMATION FOR Y(NCS)3·4(1/2)H2O and Y(NCS)3·2(1/2)H2O |
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| 摘要: 本文首次制备了异硫氰酸钇低水合物Y(NCS)3·4 1/2H2O和Y(NCS)3·2 1/2H2O,采用量热法测定了它们在298.15K时的标准生成焓,进而计算了它们的晶格能以及相应的标准脱水焓。 |
| 关键词: 钇 异硫氰酸盐 低水合物 标准生成焓 |
| 基金项目: 中国科学院基金 |
| Abstract: The lower hydrates Y(NCS)3·4 1/2H2O and Y(NCS)3·2 1/2H2O were prepared by means of dehydration of Y(NCS)3·6H2O. The melting points of Y(NCS)3·4 1/2H2O, Y(NCS)3·2 1/2H2O and Y(NCS)3·6H2O were determined by using capillary tube method. All of the hydrates were characterized by X-ray diffraction.The integral heats of solution of Y(NCS)3·4 1/2H2O, Y(NCS)3·2 1/2H2O and Y(NCS)3·6H2O were measured calorimetrically at 298.15K(see table 6). The standard enthalpies of formation of Y(NCS)3·4 1/2H2O and Y(NCS)3·2 1/2H2O were calculated (see table 7). The standard dehydration enthalpies of Y(NCS)3·6H2O to corresponding lower hydrates Y(NCS)3·4 1/2H2O and Y(NCS)3·2 1/2H2O and the lattice energies of Y(NCS)3·4 1/2H2O and Y(NCS)3·2 1/2H2O were also calculated (the results were shown in table 7). |
| Keywords: yttrium isothiocyanate lower hydrate standard enthalpies of formation |
| 投稿时间：1988-05-04 |
| 摘要点击次数: 1136 |
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| 张建华,蒋本杲,孙同山,尹敬执.Y(NCS)3·4(1/2)H2O和Y(NCS)3·2(1/2)H2O的制备、性质及标准生成焓的测定[J].无机化学学报,1990,6(4):427-432. |
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