Synthesis and Characterization of Diorganotin Compounds Containing Silicon and Germanium and Crystal Structure of Precursor Carboxy-Ethyltrichlorogermanium

Some tricyclohexyltin carboxylates containing germanium: synthesis, spectral and crystallographic characterization

“…Some of these compounds were found to be more active for certain bacteria, such as Bacillus cerus and Klebsiella pneumoniae, than the reference drugs were. 7 In a continuation of our previous reports, 8,9 we have synthesized some triorganotin carboxylates containing triorganogermyl groups as part of the carboxylate ligands and report their structures, antibacterial, antifungal and lethality bioassays.…”

In vitro anti-leishmanial activities of germatranyl and Silicon incorporated diorganotin derivatives: Synthesis and spectroscopic properties

“…The aromatic carbon resonances were assigned by comparison of experimental chemical shift values with those calculated from incremental method [20] and then compared with the literature values [21]. Numbering of carbon atoms is in accordance to the footnote of Table-II. to 123 ppm [15,22]. In conclusion NMR parameters suggested that there are dynamic processes connected with the coordination of the carboxylate oxygens to the tin atom in these compounds.…”

“…The CH 2 group attached to silicon and tin resonated up-field in the region of 0.06-0.8 ppm which is due to the electropositive nature of both the two atoms. The cyclic skeleton of germatranes, comprises an AABB spin system, give two triplets around 3.6 -3.9 ppm for OCH 2 and 2.7-2.9 ppm for NCH 2 moiety with vicinal coupling constant, 3 J (AB) value of 5-6 Hz in solution (CDCl 3 ) [15]. Methyl group attached to silicon absorbs at 0.1 -0.3 ppm.…”

“…Germatranyl-3-propionic acids and bis[phenyl(dimethysilylmethylene)]tin dichloride were synthesized and characterized in accordance to our earlier report [15].…”

“…All the chemicals used were of reagent grade and all organic solvents were dried prior to use according to the reported methods [16]. For the details of apparatus and instruments used see elsewhere [14,15,17].…”