mu. -Oxo-bis(oxo) dinuclear complexes of technetium(V) with amine phenol ligands: Syntheses, characterization, and x-ray crystal structures
- Bhabha Atomic Research Center, Bombay (India)
- National Tsing Hua Univ., Hsinchu (Taiwan)
- Univ. of Missouri, Columbia (USA)
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, and 1,4-diaminobutane have been synthesized. {sup 1}H and proton-decoupled {sup 13}C nuclear magnetic resonance spectra of the complexes have been recorded and compared with those of the parent ligands. The complexes have been characterized by infrared spectroscopy, visible-UV spectrophotometry, and x-ray crystallography. X-ray crystal structures show all three complexes are dinuclear with a {mu}-oxo-bis(oxo) (O{double bond}Tc-O-Tc{double bond}O) backbone. The distorted octahedral coordination of Tc(V) is completed by a tetradentate diamine diphenolate ligand. Neutrality of the complexes is achieved by deprotonation of the phenols and by terminal and bridging oxo ligands. The technetium complexes have either a true crystallographic center of symmetry or an approximate center at the bridging oxygen. 16 refs., 4 figs., 10 tabs.
- DOE Contract Number:
- FG02-86ER60400
- OSTI ID:
- 6663916
- Journal Information:
- Inorganic Chemistry; (USA), Vol. 29:10; ISSN 0020-1669
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
AMINES
SYNTHESIS
PHENOLS
TECHNETIUM COMPLEXES
CRYSTAL STRUCTURE
EXPERIMENTAL DATA
MOLECULAR STRUCTURE
AROMATICS
COMPLEXES
DATA
HYDROXY COMPOUNDS
INFORMATION
NUMERICAL DATA
ORGANIC COMPOUNDS
TRANSITION ELEMENT COMPLEXES
400201* - Chemical & Physicochemical Properties