一些双原子基团振动光谱的变化规律

REGULARITY OF SOME DIATOMIC GROUPS VIBRATION SPECTRA

本文考查了碳族、氧族和卤素的一些双原子分子和离子的红外光谱和拉曼光谱波数的变化情况。发现它们的谐振动波数及非谐性常数有规律地变化,由谐振动波数计算得力常数。力常数除少数例外,也是有规律变化。力常数变化,谐振动波数变化及非谐性常数变化基本上是平行的。数据回归分析表明,各系列的谐振动波数差值Δ_v与折合质量之和μ′服从关系式Δ~v=a+b(1/μ′),对同一系列,a、b是常数,表6,参2。

IR and Raman spectra wace numbers of some diatomic groups are discussed.It is found that the changs of force constants,harmonic vibration wave numbers and anharmonicity constants are basically parallel, and the correlation of and μ' is △ v=a+b1/μ'in the nearest two groups△ v represents harmonic vibration wave number of one minus that of another and μ' represents reduced mass of one plus that of another.6tabs.,2refs.