| 摘要 |
The invention relates to complexes comprising a metal ion and chelating ligands which incorporate a bipodal backbone. More particularly, the invention pertains to bipodal ligand bis-{¢bis-(carboxymethyl)-amino!-methyl}-phosphinic acid (H5xuta) which forms novel coordination compounds with a variety of metal ions, particularly, but not exclusively, trivalent metal ions and lanthanide metal ions, which are useful in nuclear medicine. The process comprises complexing Tc or Re or any one of the group 13 metals, Al, Ga and In, and any one of the rare earths, Sc, Y, La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb and Lu, with the H5xuta bipodal ligand.
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