KINETIC-STUDY OF THE INTERCONVERSION OF THE REGIO-ISOMERIC IRON TRICARBONYL COMPLEXES DERIVED FROM 4-BROMOTROPONE

The title complexes, 1 and 2, have been prepared and their interconver sion has been studied by H-1 NMR spectroscopy; the activation enthalpi es and entropies as well as the equilibrium constants for these revers ible intramolecular first-order processes have been determined, The ir on tricarbonyl complex 3 of 3-bromotropone has also been prepared, but this does not isomerize to regio-isomer 4.