Synthesis and characterization of cationic technetium complexes of 1,2-bis(dimethylphosphino)ethane (DMPE): structure determinations of trans-(Tc/sup v/(DMPE)/sub 2/(OH)(O))(F/sub 3/CSO/sub 3/)/sub 2/, trans-(Tc/sup III/(DMPE)/sub 2/Cl/sub 2/)F/sub 3/CSO/sub 3/, and (Tc/sup I/(DMPE)/sub 3/)/sup +/ using x-ray diffraction, EXAFS, and /sup 99/Tc NMR
Three distinct cationic complexes of technetium, containing Tc(V), Tc(III), and Tc(I) centers, have been prepared by reduction of pertechnetate with bis(1,2-dimethylphosphino)ethane (DMPE). Careful control of reaction conditions allows the synthesis of any one of three trans-complexes in greater than 90% yield. All complexes have been characterized by visible-, uv-, and ir-spectrophotometry, elemental analyses, and high-performance liquid chromatography. The Tc(I) complex has been additionally characterized by /sup 31/P and /sup 99/Tc NMR, as well as a new type of extended x-ray absorption fine structure analysis (EXAFS), which show that this is an octahedral species with a Tc-P bond length of 2.40A. The Tc(V) and Tc(III) complexes have been additionally characterized by single-crystal x-ray analyses.
- Research Organization:
- Univ. of Cincinnati, OH
- OSTI ID:
- 6054127
- Journal Information:
- Inorg. Chem.; (United States), Vol. 23:20
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
ALKANES
CHEMICAL PREPARATION
CRYSTAL STRUCTURE
MOLECULAR STRUCTURE
ORGANIC PHOSPHORUS COMPOUNDS
TECHNETIUM COMPLEXES
ABSORPTION SPECTRA
EXPERIMENTAL DATA
INFRARED SPECTRA
LIQUID COLUMN CHROMATOGRAPHY
NMR SPECTRA
PHOSPHORUS 31
TECHNETIUM 99
X-RAY DIFFRACTION
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
CHROMATOGRAPHY
COHERENT SCATTERING
COMPLEXES
DATA
DIFFRACTION
HOURS LIVING RADIOISOTOPES
HYDROCARBONS
INFORMATION
INTERMEDIATE MASS NUCLEI
ISOMERIC TRANSITION ISOTOPES
ISOTOPES
LIGHT NUCLEI
NUCLEI
NUMERICAL DATA
ODD-EVEN NUCLEI
ORGANIC COMPOUNDS
PHOSPHORUS ISOTOPES
RADIOISOTOPES
SCATTERING
SEPARATION PROCESSES
SPECTRA
STABLE ISOTOPES
SYNTHESIS
TECHNETIUM ISOTOPES
TRANSITION ELEMENT COMPLEXES
YEARS LIVING RADIOISOTOPES
400301* - Organic Chemistry- Chemical & Physicochemical Properties- (-1987)
400201 - Chemical & Physicochemical Properties