Prediction of Internuclear Distances of Di-atoms

Abstract

SEVENTEEN years ago¹, on the basis of my proposed modification of the Morse rule connecting fundamental vibration frequency and internuclear distance of di-atoms, I ventured to predict internuclear distances for certain cases which had not then been determined experimentally. The accompanying table compares the values predicted for di-atoms of the KKpp sub-period with experimental results given in a new table due to Herzberg². In some cases, the fundamental frequencies on which the calculations depend have been shifted by a few wave-numbers. In spite of these small corrections, it is judged sufficient to make direct comparison between the two sets of numbers without further calculation.