Synthesis, characterization and structures of cadmium(II) and mercury(II) complexes with bis(dipiperidinylphosphino)methylamine dichalcogenides

M. Abderrahmane Sanhoury, T. Mbarek, Alexandra Martha Zoya Slawin, M. T. Ben Dhia, M. R. Khaddar, J. Derek Woollins

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)
2 Downloads (Pure)

Abstract

Two new bidentate phosphine dichalcogenide ligands of the type MeN(Pip2PE)2 [(Pip = piperidinyl; E = S (1) or Se (2)] and their cadmium(II) and mercury(II) chloride complexes MCl2{MeN(Pip2PE)2} [M = Cd; E = S (3); Se (4) or M = Hg; L = S (5); Se (6)] were prepared and characterized by elemental analysis, IR, multinuclear (31P, 77Se and 113Cd) NMR spectroscopy and single crystal X-ray analyses. Ligands 1 and 2 were found to adopt anti conformation structures in the solid state in which both P=E groups are trans to each other. Complexes 3-6 are comprised of one ligand coordinated in a bidentate fashion to the metal centre in a distorted tetrahedral arrangement [98.46(3)-121.24(4)°]. The P=S bond lengths of 1.999(15)-2.003(14) Å in the complex (3) are slightly elongated compared to those in free ligand [1.933(15)-1.950(14) Å]. The results are discussed and compared with closely related analogues.
Original languageEnglish
Pages (from-to)106-111
Number of pages6
JournalPolyhedron
Volume119
Early online date31 Aug 2016
DOIs
Publication statusPublished - 24 Nov 2016

Keywords

  • Cadmium
  • Mercury complex
  • bis(dichlorophosphino)methylamine
  • 31P
  • 77Se
  • 113Cd
  • NMR

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