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Related Concept Videos

Preparation and Reactions of Sulfides02:26

Preparation and Reactions of Sulfides

Sulfides are the sulfur analog of ethers, just as thiols are the sulfur analog of alcohol. Like ethers, sulfides also consist of two hydrocarbon groups bonded to the central sulfur atom. Depending upon the type of groups present, sulfides can be symmetrical or asymmetrical. Symmetrical sulfides can be prepared via an SN2 reaction between 2 equivalents of an alkyl halide and one equivalent of sodium sulfide.
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Chirality is most prevalent in carbon-based tetrahedral compounds, but this important facet of molecular symmetry extends to sp3-hybridized nitrogen, phosphorus and sulfur centers, including trivalent molecules with lone pairs. Here, the lone pair behaves as a functional group in addition to the other three substituents to form an analogous tetrahedral center that can be chiral.
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Aldehydes and Ketones to Alkenes: Wittig Reaction Mechanism01:14

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Related Experiment Video

Updated: Jun 12, 2026

Preparation and Reactivity of a Triphosphenium Bromide Salt: A Convenient and Stable Source of Phosphorus(I)
08:46

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Published on: November 22, 2016

py(2)P(2)S(7): a bis(pyridine)adduct stabilized phosphorus sulfide.

Christiane Rotter1, Camilla Evangelisti, Stefanie Schönberger

  • 1Department of Chemistry, Ludwig-Maximilian University of Munich, Butenandtstr. 5-13 (D), D-81377 Munich, Germany.

Chemical Communications (Cambridge, England)
|June 1, 2010
PubMed
Summary

Researchers synthesized a novel phosphorus sulfide, P(2)S(7), stabilized with pyridine. This new compound was characterized using X-ray diffraction and quantum chemical calculations, revealing weak pyridine coordination.

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Area of Science:

  • Inorganic Chemistry
  • Solid-State Chemistry
  • Materials Science

Background:

  • Phosphorus sulfides are compounds with diverse structures and properties.
  • The synthesis and characterization of novel phosphorus-containing materials remain an active area of research.

Purpose of the Study:

  • To synthesize and characterize a new phosphorus sulfide compound.
  • To investigate the structural and bonding properties of the new compound.

Main Methods:

  • Reaction of phosphorus pentasulfide (P(4)S(10)) with sulfur in pyridine.
  • Isolation and characterization of the product using single crystal X-ray diffraction.
  • Computational analysis using quantum chemical calculations.

Main Results:

  • A new phosphorus sulfide, P(2)S(7), was successfully synthesized and stabilized as a bis(pyridinium) adduct.
  • The compound was isolated as colourless block-shaped crystals.
  • Single crystal X-ray diffraction revealed a weak coordination of pyridine to phosphorus (d(P-N) = 187 pm).
  • Quantum chemical calculations supported the observation of weak pyridine coordination.

Conclusions:

  • The successful synthesis of P(2)S(7) expands the known family of phosphorus sulfides.
  • The weak pyridine coordination offers insights into the reactivity and stability of such adducts.
  • This study highlights the utility of combining experimental diffraction and computational methods for characterizing novel inorganic compounds.