Bis- and tris-phosphinostannane gold complexes featuring Au -> Sn dative interactions: Synthesis, structures, and DFT calculations Academic Article uri icon

abstract

  • 2016 Elsevier Ltd As part of our interest in the coordination chemistry of heavy Group 14 elements, we have synthesized complexes of general formula [(o-(Ph2P)C6H4)2SnClPh]AuX (X = Cl (2-Cl), X = Br (2-Br), and X = I (2-I)) in which the chlorostanane unit acts as a -acceptor ligand toward gold. The existence of a Au Sn dative bond is evidenced by a trigonal bipyramidal geometry about the tin atom as well as a distorted square planar geometry about the gold center. While the measured AuSn bond distances are crystallographically indistinguishable in this series, theoretical investigations reveal that the strength of the Au Sn interaction increases in the order 2-I < 2-Br < 2-Cl. These results suggest that the Au Sn interaction is affected by the ligands around gold. Lastly, we also report the tripodal complex [(o-(Ph2P)C6H4)3SnCl]AuSnCl3(4) in which the gold atom is concomitantly coordinated to a Z-type tin ligand and an X-type tin ligand.

published proceedings

  • POLYHEDRON

author list (cited authors)

  • Lin, T., & Gabbai, F. P.

citation count

  • 17

complete list of authors

  • Lin, Tzu-Pin||Gabbaii, Francois P

publication date

  • March 2017