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Preparation and Use of Carbonyl-decorated Carbenes in the Activation of White Phosphorus
Published on: October 3, 2014
Systematic reactions of [Pt(PF3)4].
Thomas Drews1, Dieter Rusch, Stefan Seidel
1Freie Universität Berlin, Institut für Chemie und Biochemie, Fabeckstrasse 34-36, 14195 Berlin, Germany.
Chemistry (Weinheim an Der Bergstrasse, Germany)
|March 28, 2008
Summary
Platinum hexafluoride (PF3) complexes undergo structural transformations upon reaction with protons and fluoride ions. These reactions yield various platinum hydride complexes with different geometries, including trigonal bipyramidal and square-planar structures.
Area of Science:
- Inorganic Chemistry
- Organometallic Chemistry
- Coordination Chemistry
Background:
- Tetrahedral platinum(0) complexes are known to exhibit interesting reactivity.
- Understanding the coordination chemistry of platinum is crucial for catalysis and materials science.
- Phosphorus trifluoride (PF3) is a common ligand in organometallic chemistry.
Purpose of the Study:
- To investigate the reactivity of tetrahedral [Pt(PF3)4] with protons and oxidizing agents.
- To characterize the resulting platinum hydride complexes and their structural transformations.
- To explore cluster formation reactions involving platinum complexes.
Main Methods:
- Protonation reactions of [Pt(PF3)4].
- Oxidation of [Pt(PF3)4] using arsenic pentafluoride (AsF5).
- Synthesis of platinum complexes in HF/SbF5 solution.
- Fluoride-induced cluster formation reactions.
Main Results:
- Protonation of [Pt(PF3)4] leads to trigonal bipyramidal [Pt(PF3)4H]+, which loses PF3 to form square-planar [Pt(PF3)3H]+.
- [Pt(PF3)4] is oxidized by AsF5 to square-planar [Pt(PF3)4]2+.
- An alternative synthesis of [Pt(PF3)4]2+ was achieved using PtF4 and PF3 in HF/SbF5.
- Reaction of [Pt(PF3)4]2+ with F- in HF results in the formation of the cluster [Pt4(PF3)8H]+.
Conclusions:
- The study demonstrates the diverse reactivity of [Pt(PF3)4] under different chemical conditions.
- Protonation and oxidation lead to distinct structural changes and coordination geometries.
- Fluoride ions can induce complex cluster formation with platinum complexes.
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