Inelastic neutron scattering and potential shape in ammonium hexachlorides
Inelastic neutron scattering and potential shape in ammonium hexachlorides
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DOI：
10.1088/0022-3719/12/19/008
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发表时间：
1979-10
期刊：
影响因子：
--
通讯作者：
K. Otnes;I. Svare
中科院分区：
文献类型：
--
作者：
K. Otnes;I. Svare
在结构几乎相同的立方六氯化铵中进行的非弹性中子散射研究得出：82K时NH4+第一激发态的能量E1: (NH4)2PdCl6为7.5 meV, (NH4)2PtCl6为8 meV， （NH4）2SnCl6为14.5 meV, (NH4)2PbCl6为15.5 meV, (NH4)2TeCl6为18 meV。NH4+质子弛豫重定向的E1与活化能Ea之间的关系与大多数其他铵盐不同。讨论了NH4+看到的电势形状，发现Ea和E1是结构参数的敏感函数。
Investigations of inelastic neutron scattering in cubic ammonium hexachlorides that have almost identical structures give the following energies E1 for the first excited NH4+ torsional state at 82K: 7.5 meV for (NH4)2PdCl6, 8 meV for (NH4)2PtCl6, 14.5 meV for (NH4)2SnCl6, 15.5 meV for (NH4)2PbCl6 and 18 meV for (NH4)2TeCl6. The relation between E1 and activation energies Ea for NH4+ reorientation from proton relaxation differs from that of most other ammonium salts. The shape of the potential seen by NH4+ is discussed Ea and E1 are found to be very sensitive functions of the structure parameters.