A series of 16 "3 + 2" mixed-ligand complexes of the general composition [ReO(L1)(L2)] (HL1a-HL1d = tridentate thiosemicarbazones having a phenyl group with 4-H, 4-F, 3,5-di-F, and 4-CF substituents; HL2a-HL2d = bidentate ,-diethyl-'-benzoylthioureas with 4-H, 4-F, 3,5-di-F, and 4-CF substituents at the benzoyl groups) have been synthesized and characterized by spectroscopic methods and X-ray diffraction. Irrespective of the individual fluorine substitution, the complexes are stable and possess the same general structure. Some systematic electronic effects of the fluorine-substitution patterns of the ligands have been found on the C NMR chemical shifts of the N-C═N carbon atoms of the {L1} and the C═O carbon atoms of the {L2} ligands.
View Article and Find Full Text PDF