Related Experiment Video
Updated: May 27, 2025

Preparation and Reactivity of a Triphosphenium Bromide Salt: A Convenient and Stable Source of PhosphorusI
Published on: November 22, 2016
An Ambiphilic Phosphide with Three Different Coordination Modes to Group 7-10 Metals
Adrien T Normand1, Hélène Cattey1, Marie-José Penouilh1
1Institut de Chimie Moléculaire de L'Université de Bourgogne (ICMUB), 9 avenue Alain Savary, 21000 Dijon, France.
New phosphide anions, bis(thiophosphoranyl)phosphide (BTPP), coordinate to transition metals. These complexes exhibit diverse coordination modes and geometries, with applications in single-molecule magnets and catalysis.
Area of Science:
- Coordination Chemistry
- Organometallic Chemistry
- Materials Science
Background:
- Phosphide anions are versatile ligands in coordination chemistry.
- Electron-withdrawing substituents can impart ambiphilic properties to phosphide anions.
- Thiophosphorane substituents offer unique coordination capabilities.
Purpose of the Study:
- To synthesize and characterize novel phosphide anions with P(V) thiophosphorane substituents.
- To explore the coordination behavior of the bis(thiophosphoranyl)phosphide anion (BTPP) with transition metals.
- To investigate the potential applications of the resulting metal complexes in magnetism and catalysis.
Main Methods:
- Synthesis of homoleptic and heteroleptic metal complexes.
- X-ray diffraction analysis to determine coordination modes and molecular structures.
- Magnetic property measurements to identify Single Molecule Magnet (SMM) behavior.
- Catalytic activity testing for hydrosilylation reactions.
Main Results:
- The bis(thiophosphoranyl)phosphide anion (BTPP, denoted as L) was successfully synthesized.
- L coordinates to transition metals (Groups 7-10) in three distinct modes: κ³-(S, P, S), κ²-(S, S), and κ²-(S, P).
- These coordination modes support three different geometries: octahedral, tetrahedral, and square planar.
- Complex LCo exhibits Single Molecule Magnet (SMM) properties.
- Complex LRh(COD) catalyzes the hydrosilylation of terminal alkynes.
Conclusions:
- The P(V) thiophosphorane substituents enable the formation of ambiphilic bis(thiophosphoranyl)phosphide anions (BTPP).
- BTPP acts as a versatile ligand, coordinating to various transition metals in multiple modes and supporting diverse geometries.
- The synthesized complexes demonstrate potential applications in molecular magnetism and homogeneous catalysis.
More Related Videos
10:42Combining Solid-state and Solution-based Techniques: Synthesis and Reactivity of ChalcogenidoplumbatesII or IV
Published on: December 29, 2016
07:14Author Spotlight: Experimental Approaches for the Synthesis of Low-Valent Metal-Organic Frameworks from Multitopic Phosphine Linkers
Published on: May 12, 2023
Related Concept Videos
Valence Bond Theory
Metal-Ligand Bonds
In these complexes, transition metals form coordinate covalent bonds, a kind of Lewis acid-base interaction in which both of the electrons in the bond are contributed by a donor (Lewis base) to an electron acceptor (Lewis acid). The Lewis acid in...
Coordination Number and Geometry
Coordination Compounds and Nomenclature
Structural Isomerism
Isomers are different chemical species that have the same chemical formula. Structural isomerism of coordination compounds can be divided into two subcategories, the linkage isomers and coordination-sphere isomers.
Linkage isomers occur when the coordination compound contains a ligand that can bind to the transition metal center through two different atoms. For example, the CN− ligand can bind through the carbon atom or through the nitrogen atom. Similarly, SCN− can...