PREPARATION OF 1,3-DITHIARUTHENOCENOPHANE DERIVATIVES AND THEIR BRIDGE REVERSAL ENERGZ BARRIERS

Article abstract of DOI:10.1016/0022-328X(85)87236-3

Several new ruthenocenophanes were propared and their bridge reversal energy barriers were studied by a variable NMR method.The bridge reversal energy barrier of 1,3-dithia-2,2-dimethyl<3>ruthenocenophane (ΔG^* 47.3 kJ mol^-1) is larger than that of corresponding ferrocenophane (ΔG^* 42.8 kJ mol^-1).This is attributable mainly to the difference in inter-ring distance between the ruthenocene and ferrocene nuclei.