Structural and spectroscopic characterization of two new Cd(II) complexes: bis(thiosaccharinato)bis(imidazole) cadmium(II) and tris(thiosaccharinato)aquacadmate(II)

Pd(thiosaccharinato)2·H2O, the first thiosaccharinato complex of a platinum-group metal

“…Therefore, and as it has been found in previously investigated thiosaccharinato complexes [3][4][5][6], one may expect interaction of the Pd(II) cation with the S and N atoms of the deprotonated ligand. This expectation was clearly confirmed by the analysis of IR spectrum of Pd(tsac) 2 Á H 2 O.…”

“…As discussed in our previous papers on different thiosaccharinato complexes [3][4][5][6] the most important and interesting vibrational modes for structural analysis, correspond to vibrations of the five-membered ring localized between 1500 and 400 cm À1 and which involve, in particular, the (CN), (CS), (NS) and (SO 2 ) motions. In table 1 these and other characteristic vibrations of free thiosaccharin [3] and of the Pd(tsac) 2 The data presented in this table show the same trends for Pd(tsac) 2 Á H 2 O as those observed for the other two complexes.…”

“…Ligand-to-metal vibrations are probably located below 300 cm À1 [4]. No spectral evidence was found for H 2 O participation in bonding.…”

“…We have begun a systematic study of thiosaccharinato complexes, preparing and performing detailed structural and spectroscopic studies of different Cd(II) and Tl(I) complexes containing this ligand alone or together with other coordinating molecules [3][4][5][6]. * In order to investigate the differences in chemical behavior between saccharin and thiosaccharin we have also performed a theoretical study, using density functional theory, of the electronic structures of these molecules and their anions [7].…”

Synthesis, structural and spectroscopic characterization of a new cadmium(II) complex containing imidazole (Im) as ligand, [Cd(Im)6](ClO4)2

“…Imidazole groups play a central role in metal bonding in biological systems [5,6]. Different Cd(II) complexes of imidazole (Im) such as Cd(ImH) 2 (NCS)(SCN)] n , [Cd(pfan)(NCS)(SCN)] n [5], [Cd(tsac) 4 , Cd(Im) 2 (Im) and Cd(Salox)(4-Im) 2 [7], have recently been reported.…”