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Preparation and Reactions of Sulfides

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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Related Experiment Video

Updated: May 10, 2026

Combining Solid-state and Solution-based Techniques: Synthesis and Reactivity of Chalcogenidoplumbates(II or IV)

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Published on: December 29, 2016

Bis(4-nitro-phen-yl) selenide.

¹Chemical Synthesis and Pollution Control Key Laboratory of Sichuan Province, China West Normal University, Nanchong 637002, People's Republic of China.

Acta Crystallographica. Section E, Structure Reports Online

|June 1, 2013

Summary

This study details the crystal structure of a novel selenium-containing organic compound. Molecular analysis reveals specific bond angles and rotational twists, with molecules forming a 3D network via weak interactions.

Area of Science:

Crystallography
Organic Chemistry
Materials Science

Background:

Understanding the structure-property relationships of organic selenium compounds is crucial for developing new materials.
The incorporation of selenium into organic frameworks can lead to unique electronic and structural properties.

Purpose of the Study:

To elucidate the crystal structure and molecular geometry of a novel C12H8N2O4Se compound.
To investigate intermolecular interactions and their role in crystal packing.

Main Methods:

Single-crystal X-ray diffraction was employed to determine the molecular and crystal structure.
Analysis of bond angles, dihedral angles, and intermolecular interactions (C-H⋯O) was performed.

Main Results:

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The selenium (Se) atom lies on a twofold rotational axis, with the asymmetric unit containing half a molecule.
Key geometric parameters include a C-Se-C angle of 99.48(13)°, benzene rings inclined at 63.8(1)°, and a nitro group twist of 15.9(1)°.
Weak C-H⋯O interactions facilitate the formation of a three-dimensional crystal network.

Conclusions:

The study provides a detailed structural characterization of the title compound.
The observed molecular conformation and crystal packing are governed by specific geometric constraints and weak intermolecular forces.
This structural insight is foundational for further research into the potential applications of this selenium-containing organic molecule.