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/sup 99/Tc NMR spectroscopy of technetium(I) phosphine and phosphite complexes

Journal Article · · Inorg. Chem.; (United States)
DOI:https://doi.org/10.1021/ic00291a043· OSTI ID:5614531
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A range of diamagnetic complexes with technetium in valence states of +1 to +7 has been studied, and the results of some studies on technetium(I) complexes are reported. The resonance of a Tc(I) complex, (Tc(CNBu/sup t/)/sub 6/), was measured with several different spectrometers and was found to be /minus/1914 ppM. The spectra of more than 20 different analogs with substituted isocyanides have been measured, and all were found to fall within 50 ppM of the tert-butyl derivative. A great deal of difference in the resonance values reported for the Tc(I) complex, (Tc(dmpe)/sub 3/)/sup +/ (dmpe = 1,2-bis(dimethylphosphino)ethane) is noted. Results of studies of a mixed sample of (NH/sub 4/)(Tc/sub 4/) and (Tc(dmpe)/sub 3/)(PF/sub 6/) noted that the observed resonance attributable to pertechnetate is in the region of 500 ppM. 14 references, 1 figure.

Research Organization:
Massachusetts Institute of Technology, Cambridge (USA)
OSTI ID:
5614531
Journal Information:
Inorg. Chem.; (United States), Journal Name: Inorg. Chem.; (United States) Vol. 27:18; ISSN INOCA
Country of Publication:
United States
Language:
English

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Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
400202 -- Isotope Effects
Isotope Exchange
& Isotope Separation
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
COMPLEXES
HOURS LIVING RADIOISOTOPES
INTERMEDIATE MASS NUCLEI
ISOCYANATES
ISOMERIC NUCLEI
ISOMERIC TRANSITION ISOTOPES
ISOTOPES
MAGNETIC RESONANCE
NMR SPECTRA
NUCLEAR MAGNETIC RESONANCE
NUCLEI
ODD-EVEN NUCLEI
PHOSPHORUS COMPOUNDS
RADIOISOTOPES
RESONANCE
SPECTRA
TECHNETIUM 99
TECHNETIUM COMPLEXES
TECHNETIUM ISOTOPES
TRANSITION ELEMENT COMPLEXES
YEARS LIVING RADIOISOTOPES