Structure of hypercoordinated monoorganodihalostannanes in solutions and in the solid state: the halogen effect
作者:David V. Airapetyan、Valerii S. Petrosyan、Sergey V. Gruener、Alexander A. Korlyukov、Dmitry E. Arkhipov、Allen A. Bowden、Kirill V. Zaitsev
DOI:10.1016/j.ica.2015.04.006
日期:2015.6
A series of hypercoordinated monoorganotin dibromides formed by glycolic acid amides, [RSnBr2(OCH2C(O)NR2')](2) (2a, R = Et, NR2' = NMe2; 3a, R = n-Bu, NR2' = NMe2; 4b, R = Ph, NR2' = morpholin-4-yl), were obtained and investigated by X-ray analysis, multinuclear NMR spectroscopy in solutions (H-1, C-13, Sn-119) and solid state (CP/MAS). It has been established that 2a, 3a and 4b in solid state are dimeric. For the solutions in coordinating solvents the slow monomer-dimer equilibrium has been observed. The structures of related solvated monomeric chlorides, RSnCl(DMSO)(OCH2C(O)NR2'), 5a center dot DMSO and 6a center dot DMSO, were also investigated by X-ray analysis. (C) 2015 Elsevier B.V. All rights reserved.