The chelate ring conformations of the tris(trimethylenediamine)cobalt(III) ion

Abstract

The temperature-dependence of the solution c.d. spectrum of (+)-[Co(tn)3]3+ and the solid-state c.d. of (+)-[Co(tn)3]Br3,H2O indicate a conformational equilibrium in solution between a tris-skew-boat and a trischair form, the latter being the more stable by 0·5 kcal mol–1.