Mass spectrometric and theoretical study of the mixed complex NaNdCl_4(g)

J. Kapala; I. Lisek; S. Roszak; M. Miller

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Mass spectrometric and theoretical study of the mixed complex NaNdCl_4(g)

机译：混合配合物NaNdCl_4（g）的质谱和理论研究

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The vaporisation of the NaCl-NdCl_3 system was investigated at 833-1116 K using Knudsen effusion mass spectrometry. The vapour species NaCl, NdCl_3, and NaNdCl_4 were found in the equilibrium vapour and their partial pressures were evaluated. Theoretical calculations of the NaNdCl_4(g) structure were performed and the thermodynamic functions of the complex species were evaluated. The enthalpy change of the dissociation reaction NaNdCl_4(g) = NaCl(g) + NdCl_3(g) was computed by the second and third law methods. The value of #DELTA#_dH deg (298) = 256.5 +- 7.0 resulted from this computation. The volatility enhancement of NdCl_3 by the formation of the vapour complex NaNdCl_4 was estimated from obtained thermodynamic data of gaseous and condensed phases.

机译：使用Knudsen渗流质谱法研究了NaCl-NdCl_3系统的蒸发在833-1116K。在平衡蒸气中发现了蒸气物质NaCl，NdCl_3和NaNdCl_4，并评估了它们的分压。对NaNdCl_4（g）结构进行了理论计算，并评估了复杂物种的热力学函数。通过第二定律和第三定律方法计算了离解反应NaNdCl_4（g）= NaCl（g）+ NdCl_3（g）的焓变。由该计算得到的＃DELTA＃_dHdeg的值（298）＝ 256.5±7.0。根据获得的气相和冷凝相的热力学数据，可以估算出由于形成了蒸汽络合物NaNdCl_4而增加了NdCl_3的挥发性。

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来源
《Polyhedron: The International Journal for Inorganic and Organometallic Chemistry》 |1999年第22期|共7页
作者
J. Kapala; I. Lisek; S. Roszak; M. Miller;
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正文语种 eng
中图分类化学;无机化学;
关键词
vaporisation; thermodynamics; knudsen effusion mass spectrometry; NaNdCl_4(g);

机译：汽化;热力学;努森渗流质谱;NaNdCl_4（g）;

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Mass spectrometric and theoretical study of the mixed complex NaNdCl_4(g)

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