Affordable Access

Synthesis and single crystal structures of first examples of tridentate ligands of (Te, N, S) type and their complexes with palladium(II), platinum(II) and ruthenium(II)

Inorganica Chimica Acta
Publication Date
DOI: 10.1016/j.ica.2007.09.012
  • Tellurated Schiff Bases
  • (Te
  • N
  • S) Ligands
  • Platinum
  • Palladium
  • Ruthenium
  • Metal Complex
  • Synthesis
  • Single Crystal Structure
  • X-Ray Diffraction
  • Mathematics


Abstract The First examples of (Te, N, S) type ligands, 2-CH 3SC 6H 4CH NCH 2CH 2TeC 6H 4-4-OCH 3 ( L 1) and 2- CH 3SC 6H 4CHNHCH 2CH 2TeC 6H 4-4-OCH 3 ( L 2), and their metal complexes, [PdCl( L 1)]PF 6 · CHCl 3 · 0.5H 2O ( 4), [PtCl( L 1)]PF 6 ( 5), [PdCl( L 2)]ClO 4.CHCl 3 ( 6), [PtCl( L 2)]ClO 4 ( 7), and [Ru( p-cymene)( L 2)](PF 6) 2 · CHCl 3 ( 8), have been synthesized and characterized. The single crystal structures of 4, 6 and 8 have revealed that both the ligands coordinate in them in a tridentate (Te, N, S) mode. The geometry around Pd in both the complexes has been found to be square planar, whereas for Ru in a half sandwich complex 8, it is found to be octahedral. Between two molecules of 4 there are intra and inter molecular weak Te⋯Cl [3.334(3) and 3.500(3) Å, respectively] interactions along with weak intermolecular Pd⋯Te [3.621(2) Å] interactions. The Pd–Te bond lengths are between 2.517(6) and 2.541(25) Å and the Ru–Te bond length is 2.630(6) Å. The crystal structure of [PdCl 2(4-MeO–C 6H 4– TeCH 2CH 2NH 2)] ( 9) is also determined. It is formed when KPF 6 is not added in the synthesis of 4 and Pd-complex of L 1 is recrystallized. Apart from Te⋯Cl secondary interactions, C–H⋯π interactions also exist in the crystal of 9.

There are no comments yet on this publication. Be the first to share your thoughts.