Beckmann, Jens Dakternieks, Dainis Duthie, Andrew Mitchell, Cassandra A New Class of Eight-Membered Sn<sub>2</sub>P<sub>2</sub>O<sub>4</sub> Heterocycles. Crystal Structure and Electrolytic Dissociation in Solution of <i>c</i><i>yclo</i>-[R<sub>2</sub>Sn(OPPh<sub>2</sub>O)<sub>2</sub>SnR<sub>2</sub>](O<sub>3</sub>SCF<sub>3</sub>)<sub>2</sub> (R = Me, <i>t</i>-Bu) The syntheses of <i>cyclo</i>-[R<sub>2</sub>Sn(OPPh<sub>2</sub>O)<sub>2</sub>SnR<sub>2</sub>](O<sub>3</sub>SCF<sub>3</sub>)<sub>2</sub> (R = Me (<b>1</b>), <i>t</i>-Bu (<b>2</b>)) by the consecutive reaction of R<sub>2</sub>SnO (R = Me, <i>t</i>-Bu) with triflic acid and diphenylphosphinic acid are presented. In the solid state, <b>1</b> and <b>2</b> were investigated by <sup>119</sup>Sn MAS and <sup>31</sup>P MAS NMR spectroscopy as well as X-ray crystallography and appear to exist as ion pairs of <i>cyclo</i>-[R<sub>2</sub>Sn(OPPh<sub>2</sub>O)<sub>2</sub>SnR<sub>2</sub>]<sup>2+</sup> dications and triflate anions. In solution, <b>1</b> and <b>2</b> are involved in extensive equilibria processes featuring cationic diorganotin(IV) species with Sn−O−P linkages, as evidenced by <sup>119</sup>Sn and <sup>31</sup>P NMR spectroscopy, electrospray mass spectrometry, and conductivity measurements. 31 P MAS NMR spectroscopy;electrospray mass spectrometry;diphenylphosphinic acid;Bu;crystal Structure;conductivity measurements;SCF;equilibria processes;New Class;31 P NMR spectroscopy;119 Sn;triflic acid;Electrolytic Dissociation;ion pairs;2 SnR 2;triflate anions;R 2 SnO;119 Sn MAS 2003-04-17
    https://acs.figshare.com/articles/dataset/A_New_Class_of_Eight-Membered_Sn_sub_2_sub_P_sub_2_sub_O_sub_4_sub_Heterocycles_Crystal_Structure_and_Electrolytic_Dissociation_in_Solution_of_i_c_i_i_yclo_i_-_R_sub_2_sub_Sn_OPPh_sub_2_sub_O_sub_2_sub_SnR_sub_2_sub_O_sub_3_sub_SCF_sub_3_sub_sub_2_sub_R_M/3775107
10.1021/om021042u.s001