Geanangel, R. A.2022-02-102022-02-1019784244035https://hdl.handle.net/10657/8750The reactions of aminotin(II) compounds and aminetin(II) halides with tri fluoroborane have been investigated. In Part I, the reactions of both a stoichiometric quantity and excess of trifluoroborane with bis(dimethylamino)tin(II) and bis(diethylamino)tin(II) are described. The reactions were monitored by NMR. The tensimetric titration method was also employed. The first site of BF[lowered 3] coordination was found to be the tin lone pair, and additional BF[lowered 3] coordinated to the amide nitrogens. In Part II, the reactions of tin(II)halide adducts of trimethylamine and dimethylsulfoxide, and chelated adducts of N,N,N',N'-tetramethyl ethylenediamine and di pyridyl with BFg are described. The nature of the coordinate bonding in the products has been determined by comparison of the results of various possible side-reactions. Whenever the tin(II) halide is participating in an adduct with an electron pair donor, subsequent coordination of BF[lowered 3] is on the tin site. The [raised 119]Sn, [raised 11]B, [raised 19]F and [raised 1]H NMR spectra of the products confirm the structure. Thus, the tin(II) halides exhibit electrophilic and nucleophilic properties simultaneously and are therefore named amphoadducts. All the BF[lowered 3]-coordinated tin(II) compounds reported here exhibit lessened reducing characteristics compared to tin(II) halides and may be regarded as psuedotin(II) compounds.application/pdfenThis item is protected by copyright but is made available here under a claim of fair use (17 U.S.C. §107) for non-profit research and educational purposes. Users of this work assume the responsibility for determining copyright status prior to reusing, publishing, or reproducing this item for purposes other than what is allowed by fair use or other copyright exemptions. Any reuse of this item in excess of fair use or other copyright exemptions requires express permission of the copyright holder.Thesisreformatted digital