80632-39-9Relevant academic research and scientific papers
Oxy and thio phosphorus acid derivatives of tin. 9. Di- and triorganotin(IV) diphenyl phosphate esters
Molloy,Nasser,Zuckerman
, p. 1711 - 1720 (2008/10/08)
Six triorgano- and five diorganotin(IV) diphenyl phosphates, R3SnO2P(OC6H5)2, where R = CH3, C2H5, n-C3H7, n-C4H9, C6H5, and n-C8H17, are synthesized by five routes: elimination of water by condensation of diphenylphosphoric acid with triorganotin(IV) hydroxides (R = CH3, C6H5, and c-C6H11), bis[triorganotin(IV)] oxide (R = n-C3H7, n-C4H9), or diorganotin(IV) oxides (R = CH3, n-C4H9, n-C8H17, C6H5) where the released water is removed azeotropically to drive the reactions forward or precipitation of sodium chloride from the reaction of sodium diphenyl phosphate with tri- (R = C6H5) or diorganotin(IV) (R = C2H5) chlorides. The products are crystalline solids, soluble in polar and nonpolar solvents, except for the triorganotin(IV) derivatives below R = CH3 which are oils. An NMR |2J(119Sn-C-1H)| coupling constant of 73.0 Hz is consistent with a five-coordinated structure for the trimethyltin(IV) derivative in solution. In none of the mass spectra are there parent molecular ions, ions of mass higher than the parent, or any di- or polytin-bearing species, thus ruling out association in the gas phase. The highest mass fragments derive from the loss of one organic group from tin from the triorganotin and from the loss of one ligand moiety from the diorganotin derivatives. Successive loss of phenyl groups can be seen in the phenyltin spectra. The tin-119m M?ssbauer isomer shift (IS) values (1.26-1.74 mm s-1), p [ratio of quadrupole splitting (QS) to IS] (2.60-3.54), and QS values (3.54-4.91 mm s-1) specify higher coordination for the triorganotin(IV) complexes and six-coordinated, trans-diorganotin(IV) octahedral geometries with nearly linear C-Sn-C moieties for the diorganotin(IV) complexes.
