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E4 Transfer (E=P, As) to Ni Complexes.

Veronika Heinl1, Monika Schmidt1, Maria Eckhardt1

  • 1Institute of Inorganic Chemistry, University of Regensburg, 93053, Regensburg, Germany.

Chemistry (Weinheim an Der Bergstrasse, Germany)
|May 10, 2021
PubMed
Summary
This summary is machine-generated.

Novel stable polypnictogen transition metal complexes were synthesized using phosphorus or arsenic sources at ambient temperatures. This research explores new complex structures, including prismanes and cubanes, by reacting specific zirconium and nickel precursors.

Keywords:
arsenicnickelphosphoruspolypnictogen complexestransfer reactions

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Area of Science:

  • Organometallic Chemistry
  • Inorganic Chemistry
  • Materials Science

Background:

  • Polypnictogen elements (phosphorus and arsenic) are crucial in coordination chemistry.
  • Synthesizing stable transition metal complexes with pnictogen ligands presents challenges.
  • Zirconium and nickel complexes offer versatile platforms for exploring novel bonding and structures.

Purpose of the Study:

  • To develop new synthetic routes for stable polypnictogen transition metal complexes.
  • To investigate the reactivity of [Cp''2 Zr(η1:1 -E4 )] (E=P, As) as phosphorus and arsenic sources.
  • To explore the formation of novel complex architectures, including prismanes, cubanes, and triple-decker compounds.

Main Methods:

  • Utilized [Cp''2 Zr(η1:1 -E4 )] as a source of phosphorus (E=P) and arsenic (E=As).
  • Reacted these sources with [CpR NiBr]2 (CpR =CpBn, Cp''') under varying stoichiometric ratios.
  • Characterized the resulting novel complexes using spectroscopic and structural analysis.

Main Results:

  • Synthesized novel stable polypnictogen transition metal complexes at ambient temperatures.
  • Observed the formation of prismane derivatives [(Cp'''Ni)2 (μ,η3:3 -E4 )] and arsenic-containing cubanes [(Cp'''Ni)3 (μ3 -As)(As4 )].
  • Isolated bromine-bridged cubanes and unprecedented triple-decker compounds through stepwise transfer of En units.

Conclusions:

  • Established a new method for synthesizing stable polypnictogen transition metal complexes.
  • Demonstrated the versatility of zirconium and nickel precursors in forming diverse complex structures.
  • Highlighted the influence of steric effects and stoichiometry on the resulting complex architectures.