title: Infrared spectra of new Re(III) complexes with thiourea derivatives.
abstract: Complexes of the type [Re(III)L6]X3, with L = thiourea, N-methylthiourea, N-ethylthiourea or N,N'-dimethytlthiourea and X = Cl- or PF6-, were prepared as suitable precursors for the synthesis of new rhenium complexes potentially useful in nuclear medicine. The infrared (IR) spectra of these complexes were recorded and analyzed and a general vibrational pattern for Re(III) complexes with thiourea derivatives could be established. Approximate assignments for N-allylthiourea and N-ethylthiourea are also proposed for the first time. The synthesis of the new complex [Re(III)(N-allylthiourea)6](PF6)3 is also reported, and information about its structural characteristics was obtained comparing its IR spectrum with those of the other complexes of the investigated series.
authors.affiliation: Cátedra de Química Inorgánica, Facultad de Química, Universidad de la República, 1300-Montevideo, Uruguay.
authors.forename: Dinorah
authors.initials: D
authors.lastname: Gambino
authors.forename: Eduardo
authors.initials: E
authors.lastname: Kremer
authors.forename: Enrique J
authors.initials: EJ
authors.lastname: Baran
mesh_terms: D011868:Radioisotopes; D012211:Rhenium / Q000737:chemistry*; D013055:Spectrophotometry, Infrared; D013890:Thiourea / Q000737:chemistry*
chemical_list: D011868:Radioisotopes; D012211:Rhenium; D013890:Thiourea