Synthesis, multinuclear (1H, 13C, 31P, 119Sn) NMR and structure of new optically active organotin(IV). O,O'-di-(−)-menthyldithiophosphates
Titel:
Synthesis, multinuclear (1H, 13C, 31P, 119Sn) NMR and structure of new optically active organotin(IV). O,O'-di-(−)-menthyldithiophosphates
Auteur:
García y García, Patricia Pérez-Redondo, María del Carmen Román-Bravo, Perla Reyes-González, Miguel-Angel Linzaga-Elizalde, Irma López-Cardoso, Marcela Martínez-Salas, Patricia Vargas-Pineda, Gabriela Cotero-Villegas, Ave María Cea-Olivares, Raymundo
Verschenen in:
Main group chemistry
Paginering:
Jaargang 11 (2012) nr. 2 pagina's 165-174
Jaar:
2012-06-18
Inhoud:
Four new optically active organotin(IV) O,O'-di-(−)-menthyldithiophosphates: Me3SnS2P(OMen)2 1, Ph3SnS2P(OMen)2 2, Me2Sn[S2P(OMen)2]2 3 and Ph2Sn[S2P(OMen)2]2 4 (Men = Menthyl) have been prepared in ethanol from sodium O,O'-(−)-dimenthyldithiophosphate and the corresponding tri- or diorganotin(IV) chlorides. All the compounds display optical activity and were characterized by elemental analyses, IR, EM FAB+, and multinuclear NMR, (1H, 13C, 19P 119Sn). In addition, the molecular structures of 3 and 4 were determined by X-ray single crystal analyses. Both complexes consist of discrete molecules, where tin is bonded to two carbon atoms and the four sulfur atoms of two anisobidentate dithiophosphate ligands. The environment around the central tin atom exists in skew-trapezoidal bipyramidal geometry.