Synthesis, characterization, and structural properties of mercury(II), cadmium(II) and zinc(II) tripiperidinophosphine chalcogenide complexes
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.
Citation
Ebnou , F , M’Haiham , M , Ebeid , K , Carpenter-Warren , C L , Slawin , A M Z , Woollins , J D , Ben Dhia , M T & Sanhoury , M A 2019 , ' Synthesis, characterization, and structural properties of mercury(II), cadmium(II) and zinc(II) tripiperidinophosphine chalcogenide complexes ' , Polyhedron , vol. 159 , pp. 206-211 . https://doi.org/10.1016/j.poly.2018.11.059
Publication
Polyhedron
Status
Peer reviewed
ISSN
0277-5387Type
Journal article
Description
We are grateful to the Tunisian Ministry of High Education and Scientific Research for support [grant number LR99ES14] and to the French Service for Cooperation and Cultural Action in Nouakchott, Mauritania for a scholarship to FE.Collections
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