Absolute intensities of infrared‐active fundamentals and combination bands of gaseous PuF6 and NpF6
Absolute intensities of infrared‐active fundamentals and combination bands of gaseous PuF6 and NpF6
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气态 PuF6 和 NpF6 的红外活性基波和组合带的绝对强度
DOI：
10.1063/1.451564
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发表时间：
1986
影响因子：
4.4
通讯作者：
H. Dewey
中科院分区：
文献类型：
--
作者：
W. Person;K. C. Kim;G. M. Campbell;H. Dewey
给出了PuF6和NpF6在1400和450 cm−1之间的红外活性基本和二元组合带的绝对积分摩尔吸收系数的结果。讨论了组合带ν1+ν3、ν2+ν3、ν3+ν5、ν2+ν6和ν2+ν4的低分辨率谱带轮廓。从频带中心位置，获得六个谐波数，并估计科里奥利常数ε i（i= 3，4，5和6）。对于PuF6，六个简正模振动似乎分为一个平均值为589±50 cm−1的“局部模式”拉伸和一个平均值为195±5 cm−1的局部模式弯曲。与UF6相比，重中心原子的作用和振动力常数的大小进行了讨论。与先前预测的值相比，讨论了ν3的测量强度。
Results are presented for the absolute integrated molar absorption coefficients of the infrared‐active fundamental and binary combination bands of PuF6 and of NpF6 between 1400 and 450 cm−1. The low resolution band contours of the combination bands ν1+ν3, ν2+ν3, ν3+ν5, ν2+ν6, and ν2+ν4 are discussed. From band center positions, the six harmonic wave numbers were obtained and Coriolis constant ζi (i=3, 4, 5, and 6) estimated. For PuF6, the six normal mode vibrations appear to group into one ‘‘local mode’’ stretching at a mean value of 589±50 cm−1 and one local mode bending at 195±5 cm−1. The role of the heavy central atom and the magnitudes of the vibrational force constants are discussed in comparison with UF6. The measured intensity for ν3 is discussed in comparison with previously predicted values.