Synthesis,Characterization And Acaricidal Activity Of Mixed Trialkyltin Compounds Containing Silicon

The gemricidal and miticical activities in some triorganotincompounds had led to their applicationin agriculture.However, besides the nomral biological functions, some toxicity-sides effets were also appeared in many ogranotin compounds, which to certain extent prohibited their practical use.A number of studies showed containing-silicon mixed triorganotin compounds keep it the original biological activitives and make their toxicity decrease at the same time. In order to study deeply on the structural,gemricidal and miticical activities of 12 new containing-silicon mixed triorganotin compounds were synthesized.(1) One triorganotin iodide (EtMe2SiCH2)Ph2SnI(2) One triorganotin oxide [(EtMe2SiCH2)Ph2Sn]2O(3) Ten triorganotin aromatic acid esters (EtMe2SiCH2)Ph2SnOCOAr Ar=C6H5, C6H4F-p, C6H4Cl-o, C6H4OCH3-o, C6H4NO2-o, C6H4NO2-p, C6H4Cl-p, C6H4OCH3-p, C6H4CH3-p, C6H4NO2-mTheir structures were characterized by IR, C-NMR,elemental analysis and show Sn atom of containing-silicon mixed triorganotin compounds may be four-coordinati-on.The preliminary bioassay tests demonstrated that containing-silicon mixed triorganotin compounds have certain good acaricidal activity。...