Pure quadrupole resonance of iodine in ammonium, rubidium, and cesium triiodides
Pure quadrupole resonance of iodine in ammonium, rubidium, and cesium triiodides
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三碘化铵、三碘化铷和三碘化铯中碘的纯四极共振
DOI：
10.1021/j100869a019
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发表时间：
1967
期刊：
影响因子：
--
通讯作者：
M. Kubo
中科院分区：
文献类型：
--
作者：
A. Sasane;D. Nakamura;M. Kubo
纯四极共振研究已经在不同温度下的铵，铷和三碘化铯中的碘。观察到三个v_1和两个v_0频率，表明晶体中存在三种不等价的碘原子。通过X射线分析，将所观察到的频率分配给三种不等价的碘原子。计算了I3~中不同碘原子上的电荷，并从不同电子结构间的共振解释了这些电荷。发现三碘化铵的轻微异常是由于铵离子和带负分数电荷的末端碘原子之间形成氢键所致。
Pure quadrupole resonance studies have been made on iodine in ammonium, rubidium, and cesium triiodides at various temperatures. Three v\and two v¡ frequencies were observed indicating the existence of threekinds of nonequivalent iodine atoms in crystals. The observed frequencies were assigned to three kinds of nonequivalent iodine atoms as revealed by X-ray analysis. The charges on different iodineatoms in I3~ were evaluated and interpreted in terms of resonance among various electronic structures. Slight anomalies found for ammonium triiodide are attributable to the formation of hydrogen bonds be-tween ammonium ions and terminal iodineatoms carrying a negative fractional charge.