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Synthesis characterisation and stability of mixed aryldichalcogenide bis(diphenylphosphino)ethanenickel(II) complexes. X-ray structure of Ni(dppe)(SeC6H4S)

  • Mary S. Thomas
  • , James Darkwa*
  • , Emmanuel Y. Osei-Twum
  • , Luis A. Litorja
  • *Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

12 Scopus citations

Abstract

Mixed chalcogenide complexes of the type Ni(dppe)(SeC6H4S) (dppe=bis(diphenylphosphino)ethane), Ni(dppe)(SC5H3NCO2) and Ni(dppe)(EC5H3NE′) (E=NH, E′=O; E=E′=NH) have been prepared from the reactions of Ni(dppe)Cl2 with the appropriate aryldichalcogen or pyridine-based compound, using Et3N as a base. The relative solution and thermal stabilities of the above compounds, other mixed chalcogen ones, Ni(dppe)(SC6H4O), Ni(dppe)(SC6H4CO2) and Ni(dppe)(SC6H4NH), and the homoleptic compounds Ni(dppe)(EC6H4E′) (E=E′=O, E=E′=S; R=H, Me), were established by a combination of electron impact mass spectrometry (EIMS) and fast atom bombardment (FABMS). The most stable ones were the compounds with homoleptic sulfur ligands.

Original languageEnglish
Pages (from-to)2803-2810
Number of pages8
JournalPolyhedron
Volume18
Issue number21
DOIs
StatePublished - 10 Sep 1999

Bibliographical note

Funding Information:
Financial support from the Foundation for Research Development, South Africa (J.D.), University of the North and the Research Institute, King Fahd University of Petroleum and Minerals is gratefully acknowledged. We are also grateful to Professor J.C.A. Boeyens and Ms. Leanne Cook, Structural Chemistry Department, University of the Witwatersrand, South Africa, determining the crystal structure as a service.

Keywords

  • Crystal structure
  • Mass spectrometry
  • Nickel(II) complexes
  • Stability

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Inorganic Chemistry
  • Materials Chemistry

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