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Related Experiment Video

Updated: Oct 18, 2025

Preparation and Reactivity of a Triphosphenium Bromide Salt: A Convenient and Stable Source of PhosphorusI
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Preparation and Reactivity of a Triphosphenium Bromide Salt: A Convenient and Stable Source of PhosphorusI

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A Benzodiphosphaborolediide.

Kyle G Pearce1, Elinor P F Canham1, John F Nixon1

  • 1Department of Chemistry, University of Sussex, Falmer, Brighton, BN1 9QJ, UK.

Chemistry (Weinheim an Der Bergstrasse, Germany)
|September 29, 2021
PubMed
Summary
This summary is machine-generated.

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Researchers synthesized the first diphosphaborolediide, a novel fused ring system. This compound exhibits aromaticity and can coordinate to metal centers, opening new avenues in inorganic chemistry.

Area of Science:

  • Organometallic Chemistry
  • Main Group Chemistry
  • Supramolecular Chemistry

Background:

  • Diphosphaborolediides are a class of inorganic compounds that have not been extensively studied.
  • Aromaticity in polyanionic systems is of significant interest in chemistry.

Purpose of the Study:

  • To synthesize and characterize the first example of a benzo-fused diphosphaborolediide.
  • To investigate the aromaticity and coordination properties of this novel compound.

Main Methods:

  • Synthesis via sequential lithiation of ortho-bis(phosphino)benzene with dichlorophenylborane.
  • Characterization using X-ray diffraction, NICS calculations, and preliminary coordination studies.
  • Formation of dilithio-salt as THF solvate or TMEDA adduct.
Keywords:
anionsboranesborolediidephosphacyclephosphane

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Main Results:

  • Successful synthesis of the benzo-fused [C6H4P2BPh]2- (12-) diphosphaborolediide.
  • X-ray diffraction confirmed the structure of the dilithio-salt solvates.
  • NICS calculations and coordination studies suggest aromatic character and η5-coordination to molybdenum.

Conclusions:

  • The first diphosphaborolediide has been synthesized and characterized.
  • The compound displays evidence of aromaticity.
  • Preliminary studies show its ability to coordinate to a zerovalent molybdenum center, highlighting its potential in organometallic chemistry.