938157-39-2Relevant academic research and scientific papers
One and two photon fluorescent complexes of rhenium and their technetium analogues
Botchway, Stanley,Dilworth, Jonathan R.,Salichou, Maria
, p. 5219 - 5220 (2010)
The synthesis of rhenium and 99m-technetium complexes of dipyrazolemethanecarboxylates directly from the tetroxometallates is reported together with a 'one pot' synthesis of mixed ligand M(v) complexes. The rhenium complexes in all three oxidation states show strong fluorescence when the pyrazole groups have aromatic substituents with emission around 330 nm with both one and two photon excitation. The emission lifetimes of the complexes and free ligands differ considerably.
Syntheses and structures of pyrazolylmethane complexes of rhenium(iii), (iv) and (v)
Cowley, Andrew R.,Dilworth, Jonathan R.,Salichou, Maria
, p. 1621 - 1629 (2007/10/03)
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 (XCl, [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)+ (XCl, Br, n = 2, 3) by the reaction of bis(pyrazolylmethane) and bis(pyrazolylacetate) ligands with [ReOCl3(PPh3) 2]. Dinuclear complexes containing the ORe-O-ReO group were also isolated and structurally characterised. We have also investigated the reactions of these ligands with diazenide precursors and isolated and characterised complexes of the type [ReClx(N2Ph) (L)(PPh3)] (x = 1,2). The potential applications of these complexes as radiopharmaeuticals is discussed. The Royal Society of Chemistry.
