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Updated: Apr 28, 2026

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Published on: November 22, 2016

Bis- and tris(pyrazolyl)borate/methane-stabilized P(III) -centered cations.

Lianghu Gu¹, Gopinadhanpillai Gopakumar, Pauline Gualco

¹Max-Planck-Institut für Kohlenforschung, Kaiser Wilhelm Platz 1, 45470 Mülheim an der Ruhr (Germany), Fax: (+49) 208-306-2994.

Chemistry (Weinheim an Der Bergstrasse, Germany)

|June 6, 2014

Summary

Researchers synthesized novel phosphonium salts using pyrazolyl-based ligands and chlorophosphines. These compounds, featuring bis(pyrazolyl)borate and tris(pyrazolyl)borate ligands, were structurally and electronically characterized.

Keywords:

DFT base stabilization cationic phosphines coordination complexes p-block chemistry

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Published on: July 30, 2017

Area of Science:

Organometallic Chemistry
Coordination Chemistry
Synthetic Chemistry

Background:

Pyrazolyl-based ligands are versatile building blocks in coordination chemistry.
Phosphonium salts are important intermediates and target molecules in various chemical applications.
Exploring new synthetic routes to functionalized phosphonium salts is of significant interest.

Purpose of the Study:

To report the synthesis of novel phosphonium salts incorporating bis(pyrazolyl)borate and tris(pyrazolyl)borate ligands.
To investigate the structural and electronic properties of these newly synthesized compounds.

Main Methods:

Synthesis via reaction of neutral or anionic pyrazolyl ligands with chlorophosphines in the presence of TMSOTf.
Structural elucidation using X-ray crystallographic analysis.
Electronic structure examination via density functional theory (DFT) calculations.

Main Results:

Successful synthesis of four series of phosphonium salts: [H2B(pz)2PR]+, [H2C(pz)2PR]2+, [HB(pz)3P]2+, and [HC(pz)3P]3+.
Determination of the molecular structures of these compounds through X-ray crystallography.
Insights into the bonding nature and electronic properties provided by DFT analyses.

Conclusions:

The study demonstrates a viable synthetic pathway to novel phosphonium salts with diverse pyrazolyl-based ligands.
The combined structural and computational analyses provide a comprehensive understanding of these organophosphorus compounds.
These findings contribute to the broader field of coordination chemistry and the development of new functional materials.