B. Noll et al., RHENIUM(V) GLUCONATE, A SUITABLE PRECURSOR FOR THE PREPARATION OF RHENIUM(V) COMPLEXES, Isotopes in environmental and health studies, 32(1), 1996, pp. 21-29
Reduction of perrhenate with stannous chloride at an excess of sodium
gluconate in aqueous solution results in formation of rhenium(V) gluco
nate. The reaction proceeds slowly compared to that of pertechnetate.
Aqueous solutions of rhenium(V) gluconate can be prepared down to a co
ncentration level of at least 10(-4) mol . l(-1) within two hours. The
usefulness of rhenium(V) gluconate to serve as a precursor for prepar
ation of oxorhenium(V) complexes as potential radiotherapeutic agents
is revealed by subsequent ligand exchange reactions carried out with m
ercaptoacetyldiglycine, 3-thiapentane-dithiol-1,5/butanethiol and with
2-aminobenzenethiol.