| 钇(Ⅲ)的二特戊酰基甲烷螯合物的合成、表征及热稳定性和升华性能研究 |
| STUDY ON SYNTHESIS, CHARACTERIZATION, STABILITY AND SUBLIMATION BEHAVIOR OF YTTRIUM(Ⅲ) DIPIVALOYLMETHANE CHELATE |
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| 摘要: 合成了钇(Ⅲ)的二特戊酰基甲烷螯合物(简称Y(DPM)3)，并以红外光谱、核磁共振谱及X-射线物相分析进行了表征和鉴定。研究了这种β-二酮类螯合物的升华性能。结果表明，其升华速率与温度呈指数关系，与载气流量呈线性关系；通过测定蒸气压与温度之间的关系，求得130℃～164℃温度范围内的升华焓和升华熵，分别为135 kJ·mol-1和265 J·mol-1·K-1。实验研究表明，该螯合物具有良好的挥发性和热稳 |
| 关键词: β-二酮螯合物 Y(DPM)3 挥发性 升华焓 升华熵 |
| 基金项目: |
| Abstract: The beta-diketone chelate of Y, Y(DPM)3 was synthesized, and characterized by IR, HNMR, MS and TG-DTA. The sublimation rate of the chelate strongly depended on the temperature and the flow rate of carrier gas. Heat of sublimation and entropy of the sublimation measured from 130 to 160℃ were 135.9 kJ·mol·K-1 and 265.0 J·mol-1·K-1 respectively. The chelate has a good stability and volatility, which is very useful as MO precursor for MOCVD and gas chromatographic analysis. |
| Keywords: beta-diketone chelate Y(DPM)3 synthesis volatility heat of sublimation entropy of sublimation thermal analysis |
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| 袁志好,杨萍华,孟广耀,彭定坤.钇(Ⅲ)的二特戊酰基甲烷螯合物的合成、表征及热稳定性和升华性能研究[J].无机化学学报,1997,13(2):168-172. |
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