Syntheses and structures of pyrazolylmethane complexes of rhenium(iii), (iv) and (v)
作者:Andrew R. Cowley、Jonathan R. Dilworth、Maria Salichou
DOI:10.1039/b617549j
日期:——
Reaction of [ReOCl3(PPh3)(2)] with HCpz(3) (pz = pyrazole) in dichloromethane leads to the formation of a new Re(iv) complex [ReCl3(HCpz3)]X (X=Cl, [ReO4]) with loss of the rhenium-oxo group. We also report a convenient, high-yield synthetic route to complexes of the type [ReOXn(L)](3-n)+ (X=Cl, Br, n = 2, 3) by the reaction of bis(pyrazolylmethane) and bis(pyrazolylacetate) ligands with [ReOCl3(PPh3)2]
[ReOCl3(PPh3)(2)]与HCpz(3)(pz =吡唑)在二氯甲烷中的反应导致形成新的Re(iv)络合物[ReCl3(HCpz3)] X(X = Cl,[ReO4] )失去loss-氧代基团。我们还报告了通过双(吡唑基甲烷)与具有[ReOCl3(PPh3)2]的双(吡唑基乙酸酯)配体。含有O = Re-O-Re = O基团的双核配合物也被分离出来并进行结构表征。我们还研究了这些配体与二氮烯前体的反应,以及分离并表征的[ReClx(N2Ph)(L)(PPh3)]型配合物(x = 1,2)。讨论了这些复合物作为放射性药物的潜在应用。