80631-10-3Relevant academic research and scientific papers
Di- and triorganotin(IV) derivatives of (diphenysphosphinyl)-and (diphenylthlophosphinyf)acetic acid
Ng,Zuckerman
, p. 714 - 720 (2008/10/08)
Seven triorganotin(IV) (diphenylphosphinyl)- and (diphenylthiophosphinyljacetates, (C6H5)2P(E)-CH2CO 2SnR3, where E = O and R = CH3, C2H6, n-C3H7, n-C4H9 c-C6H11, and C6H5 and E = S and R = C6H5, are synthesized by the reaction of triorganotin(IV) chloride with the thallium(I) salt prepared from thallium(I) ethoxide and the parent acid or the condensation of the corresponding triorganotin(IV) hydroxide or bis(oxide) with the free acid in benzene to release water which is distilled azeotropically to drive the reaction forward. Phenyl-tin cleavage accompanies the use of triphenyltin(IV) tetraphenylborate to give the diphenyltin(IV) bis(acetate), (C6H5)2Sn[O2CCH 2P(O)(C6H5)2]2, whose dimethyltin(IV) analogue can be obtained from the parent acid and dimethyltin(rV) oxide. The products are white solids soluble in common organic solvents. The triphenyltin derivative loses carbon dioxide at its melting point (180-183 °C). Addition of triphenyltin(IV) chloride to the triphenyl derivative yields a 1:2 complex, [(C6H5)2P(O)CH2CO 2Sn-(C6H5)3] 2·(C6H8)3SnCl. Evidence from proton, phosphorus-31, and tin-119 NMR, mass, infrared, Raman, and tin-119m Mo?ssbauer data rules out association through the carboxylate group, leaving coordination by the P=O oxygen as the origin of the higher coordination at tin in the solid state. Infrared, Raman, and Mo?ssbauer data are iriterperable in terms of bent and nonplanar di- and trimethyitin groups in the solid, indicating weak association or the presence of small oligomers in the solid. The diorganotin derivatives are chelated, six-coordinated, trans-R2Sn octahedra in all phases.
