.mu.-Oxo-bis(oxo) dinuclear complexes of technetium(V) with amine phenol ligands: syntheses, characterization, and x-ray crystal structures

摘要: Technetium(V) complexes of three amine phenol ligands prepared by reducing Schiff bases derived from salicylaldehyde and 1,3-diaminopropane, 2,2-dimethyl-1,3-diaminopropane, 1,4-diaminobutane have been synthesized. {sup 1}H proton-decoupled 13}C nuclear magnetic resonance spectra the recorded compared with those parent ligands. The characterized infrared spectroscopy, visible-UV spectrophotometry, x-ray crystallography. X-ray crystal structures show all are dinuclear a {mu}-oxo-bis(oxo) (O{double bond}Tc-O-Tc{double bond}O) backbone. distorted octahedral coordination Tc(V) is completed tetradentate diamine diphenolate ligand. Neutrality achieved deprotonation phenols terminal bridging oxo technetium either true crystallographic center symmetry or an approximate at oxygen. 16 refs., 4 figs., 10 tabs.