Ring strain and the negative pole. III. Strained rings as auxochromes

Abstract

From theory developed in Part 2 it is shown that saturated strained rings should have marked effects on electronic spectral transitions, generally producing bathochromic shifts, unless the transition involves migration of electric charge towards the ring, in which case a hypsochromic shift is produced. Experimental observations are in good qualitative agreement with this theory, and when simple calculations are possible, in reasonable quantitative agreement.