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Synthesis, characterization, and structural properties of mercury(II), cadmium(II) and zinc(II) tripiperidinophosphine chalcogenide complexes

Research output: Contribution to journalArticle

Author(s)

Fatimetou Ebnou, Mohamed M’Haiham, Khaled Ebeid, Cameron L. Carpenter-Warren, Alexandra M. Z. Slawin, J Derek Woollins, Med Taieb Ben Dhia, M. Abderrahmane Sanhoury

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Abstract

Reaction of metal chlorides (MCl2) with tripiperidinophosphine chalcogenides (Pip3PE) produces new dimer species (1-6) of the formula [MCl2(Pip3PE)]2 (Pip = piperidinyl; E = S or Se; M = Hg, Cd or Zn). These coordination complexes were characterized by elemental analysis, IR, multinuclear (31P, 113Cd and 199Hg) NMR spectroscopy and single crystal X-ray analysis. Compounds 1-6 exist as centrosymmetric homobimetallic dimers, [M(µ-Cl)Cl(Pip3PE)]2. Each dimer incorporates two µ2-chloro atoms and two terminal M–Cl bonds. The E atom of Pip3PE forms terminal M–E bonds {S; 2.305(11); Se: 2.412(6)-2.589(15) Å} and thus the geometry about each metal centre is distorted tetrahedral and the range of tetrahedral bond angles is 102.83(3) to 113.32(3)o. The P=Se bond lengths of 2.183(9)-2.205(2) Å in the selenide complexes are slightly elongated compared to those in the free ligands [2.1090(4) Å]. The results are discussed and compared with those obtained for related analogues.
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Details

Original languageEnglish
Pages (from-to)206-211
JournalPolyhedron
Volume159
Early online date6 Dec 2018
DOIs
Publication statusPublished - 1 Feb 2019

    Research areas

  • Cadmium, Mercury, Zinc complex, Tripiperidinophosphine chalcogenide, 31P, 77Se, 113Cd NMR

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