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), Journal Name: Inorganic Chemistry; (USA) Vol. 29:10; ISSN 0020-1669; ISSN INOCA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
400201* -- Chemical & Physicochemical Properties
AMINES
AROMATICS
COMPLEXES
CRYSTAL STRUCTURE
DATA
EXPERIMENTAL DATA
HYDROXY COMPOUNDS
INFORMATION
MOLECULAR STRUCTURE
NUMERICAL DATA
ORGANIC COMPOUNDS
PHENOLS
SYNTHESIS
TECHNETIUM COMPLEXES
TRANSITION ELEMENT COMPLEXES