Abstract

GARCIA Y GARCIA, Patricia et al. Synthesis and Multinuclear (¹H, ¹³C, ³¹P, ¹¹⁹Sn) NMR Study of Trimethyl- and Triphenyl-tin (IV) with Cyclic Dithiophosphate Ligands. Rev. Soc. Quím. Méx [online]. 2004, vol.48, n.4, pp.305-309. ISSN 0583-7693.

We report the synthesis and characterization of six new trimethyl- and triphenyl-tin dithiophosphates. Compounds 1-6 were characterized by IR, EM-EI, and multinuclear NMR (¹H, ¹³C, ¹⁹P and ¹¹⁹Sn). The six compounds show a monomeric behavior with five-coordinated tin as well as a biconective monometallic behavior of the ligands. Compounds 1-4 show, in solution, a conformational equilibrium between an equal population of the two chair conformations of the dioxaphosphinane ring and a rapid exchange of the exocyclic sulfur atoms, resulting from the chelated situation of the tin atom.

Keywords : Dithiophosphates; triorgantin-dithiophosphates; Cyclics dithiophosphates.

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