Neutral, seven-coordinate dioxime complexes of technetium(III): Synthesis and characterization

Journal Article · Wed Jun 27 00:00:00 EDT 1990 · Inorganic Chemistry; (USA)

DOI:https://doi.org/10.1021/ic00338a009· OSTI ID:6428378

Linder, K E; Malley, M F; Gougoutas, J Z; Unger, S E; Nunn, A D ^[1]

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1. Squibb Institute for Medical Research, New Brunswick, NJ (USA)

The tin-capped complexes {sup 99}Tc(oxime){sub 3}({mu}-OH)SnCl{sub 3} (oxime = dimethylglyoxime (DMG) or cyclohexanedione dioxime (CDO)) can be prepared by the reduction of NH{sub 4}TcO{sub 4} with 2 equiv of SnCl{sub 2} in the presence of dioxime and HCl. These tin-capped complexes can be readily converted into a new class of uncapped Tc-dioxime compounds, TcCl(oxime){sub 3}, by treatment with HCl. This reaction is reversible. Both the tin-capped and uncapped tris(dioxime) complexes can be converted to the previously reported boron-capped Tc-dioxime complexes TcCl(oxime){sub 3}BR (R = alkyl, OH) by reaction with boronic acids or with boric acid at low pH. All of these complexes (Tc(oxime){sub 3}({mu}-OH)SnCl{sub 3}, TcCl(oxime){sub 3}, and TcCl(oxime){sub 3}BR) appear to be neutral, seven-coordinate compounds of technetium(III). They have been characterized by elemental analysis, {sup 1}H NMR and UV/visible spectroscopy, conductivity, and fast atom bombardment mass spectrometry. The synthesis, characterization, and reactivity of these compounds is discussed. The x-ray crystal structure analysis of TcCl(DMG){sub 3} and an abbreviated structure report on TcCl(DMG){sub 3}MeB are described. Crystal data for TcCl(DMG){sub 3} are reported. 23 refs., 6 figs., 5 tabs.

• OSTI ID: 6428378
• Journal Information: Inorganic Chemistry; (USA), Journal Name: Inorganic Chemistry; (USA) Vol. 29:13; ISSN 0020-1669; ISSN INOCA
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
400202 -- Isotope Effects
Isotope Exchange
& Isotope Separation
AMINES
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
CHEMICAL PREPARATION
COMPLEXES
CRYSTAL STRUCTURE
DATA
EXPERIMENTAL DATA
HOURS LIVING RADIOISOTOPES
HYDROXY COMPOUNDS
INFORMATION
INTERMEDIATE MASS NUCLEI
ISOMERIC TRANSITION ISOTOPES
ISOTOPES
LABELLED COMPOUNDS
NUCLEI
NUMERICAL DATA
ODD-EVEN NUCLEI
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
OXIMES
RADIOISOTOPES
SYNTHESIS
TECHNETIUM 99
TECHNETIUM COMPLEXES
TECHNETIUM ISOTOPES
TRANSITION ELEMENT COMPLEXES
YEARS LIVING RADIOISOTOPES