2-phenyl-2-(p-tosylamino)acetic acid, a versatile pro-ligand for organotin compounds

Crystal structure of di-μ-nicotinato-κ2 N:O; κ2 O:N-bis-[aqua-bis(benzyl)(nicotinato-κ2 O,O′)tin(IV)], C52H48N4O10Sn2

“…Molecules of the general formula R 2 Sn(O 2 CR′) 2 (OH 2 ) are based on a pentagonal-bipyramidal geometry with the chelating carboxylate ligands and water molecule contributing O atoms to the pentagonal plane, and the tin-bound organic substituents occupying axial positions. This is the common motif as found in (c-C 6 H11) 2 Sn(O 2 CMe) 2 (OH 2 ) [7] and several other examples reported over the years [8][9][10][11][12][13]. While it is normal for new structural motifs to occur when potential N-donor atoms are incorporated in the carboxylate ligand [6], this was not the case for (4-ClC 6 H4CH 2 ) 2 Sn(O 2 CC5H4N-3) 2 (OH 2 ) [14], which was found to adopt the common structural motif.…”