“…In order to evaluate this hypothesis, the EXAFS spectrum was fitted using the scattering paths calculated in a putative {Tc 2 O 2 (PO 4 ) 4 } fragment (a) (Figure 2). The fragment (a) was constructed using the {Tc−O−P} and {Tc 2 O 2 } metrics extracted from [TcCl 4 (TPPO) 2 ] 37 and [Tc 2 O 2 (HEDTA) 2 • 6H 2 O], 38 respectively. The acronyms TPPO and HEDTA stand for triphenylphosphine oxide and hydroxyethyl-ethylenediaminetriacetic acid, respectively.…”